Hello, I hate referring to you as (Bunk Bed on Wheels) but you left no name to refer to.  Anyhow I will put in my two cents here as we just returned a few weeks ago from a 72 day trip through Canada, Yukon and Alaska.  I brought way more stuff than I needed but this was a monumental trip I wanted to think I was prepared for but you cannot prepare for everything believe me if you have read our forum post on our trip. 

Traveling 600 miles per day for two days is asking quite a lot of your equipment and more importantly the stress on you but everyone knows their limitations.  On our trip of 12,500 miles over 72 days, we could only successfully do 350 per day at a safe speed limit with our scamp (on terrible roads) with (13" wheels).  We were always tried at the end of the day but this is up to you to try as you probably have limited time to travel.  This is just a thought of mine, that is a lot of miles to realistically travel per day. 

Recommendations of preparation before long trip: 

Tow Vehicle:

1) Inspected & Maintained mechanically, all fluids changed in vehicle front to back, brakes inspected and tow vehicle wired to pull your Scamp using Electric Brakes. Be sure "V" belts are not aged, you will be traveling many hours per day. New air filter as well.   

2) Good spare tire for tow vehicle & Trailer and jack system to change a tire on both vehicles if needed.

3)  Small roll of non coated wire for emergency in case something becomes loose and it will or it did to us anyhow on the terrible roads we traveled (and never will again). 

4) Small tool kit, found at Lowe's with sockets and all emergency tools you will need if repairs are needed and can be done by you.  (using AAA will minimize this and is recommended as you already mentioned).

5) Portable (air compressor / battery jump station).  You can maintain the proper 50 lb. of pressure on the tires of Scamp every morning for safety and also the needed air in your tow vehicle tires for safety and best travel mileage. We got ours at Lowe's and very satisfied and used it several times, even to start my vehicle as my battery was old and I needed a jump start twice on our trip until I ended up getting a new one on our trip. Check tire pressure every morning when tires are cold before leaving on the road.  

6) A couple of quarts of oil for the tow vehicle, 1 gallon of full strength antifreeze, if needed you can reduce this to two gallons of 50/50 mix using water you may have in your cooler if needed, we had to do this on our trip as well.

7) I would still put about 3 gallons of water in my Scamp tank in case you need to use bathroom on the road, nothing beats having your own facilities in case there isn't any open etc. where you need to use them.  (Believe me this is wonderful especially for a woman) when needed. Make sure all waste tanks are empty before leafing on trip, add waste tank solutions to both waste tanks to control odors.

8) Fill propane tank, we used propane nearly on our entire trip as the cost and use of propane was minimal for refrigerator, and I did not have to keep changing from battery to electric to gas outside.  This is just me now.  But you will need propane for your cooking stove anyhow. 

Scamper Recommendations:

1) Bring warm clothes as well as comfortable ones in case it gets warmer than expected where you go.  

2) Be sure your shower door, (if you have one) cannot accidentally lock from vibration going down the road etc. Yep, we had that happen to and had one heck of a time getting door open.  Just a thought on my end here. 

3) Be sure to let wife or mate arrange inside of Scamp cabin the way they want it to be, things will be tight at times and letting the inside be the responsibility of the spouse will be rewarding to you in the long run, especially after a very long trip.

4)  Bring a small cooler with drinks in your tow vehicle you both want on the road filled with ice each morning.  It is good just to have a drink at any moment you need it.  

5) If you have little critters, (cats, dogs, guineas etc.) you have to pack for them too.  Be aware that sometimes animals have anxiety issues when traveling too long in one days time.  This happened to us the last 14 days of 72 total to one of our dogs and she was so anxious and could not rest.  

6) Be sure to stop for 10 minutes every 2 hrs or less to stretch etc, my wife come close to having clots in her leg from being in a position she could not relax in as we were really packed tight in our car and scamp.  I am so glad to not travel with that much stuff again and never will. I had to start stopping every 1 hr for a few minutes for her safety and health.  

7) Oh, be sure to CHEW all your foods on the road, I nearly died and my wife saved my life by giving me the Heimlich maneuver.  Lean to do CPR!!!!

Do not put on face book etc. that your are leaving on a certain date, you can brag about your trip after you get back.  We did not have anything happen to us but we had friends that were robbed the day after they left for a two week vacation because they bragged on the Internet Social Megaphone.  

If I can think of anything more it would be minimal but just think what do you really need and what can you do without.  This is harder to do than you think.  If I think of anything else I will add to this post later.  

Have a great trip, prepare the best you can using common knowledge, drive safely and SLOWLY, remember, 13" tires on Scamp!!  I hope you you reconsider the 600 mile per day goal, you will be worn out.  At 60 miles per hour that is 10 hours, you have to eat, go to the bathroom, stretch etc.  Life is too short.  

I hope some of this was useful, I am sure you probably knew all this stuff anyhow but I was more concerned about your long travel per day goal more than anything. 

Good Luck, 

Garylee