Sounds like a nice trip and the right toy hauler for it. Chasing the sun from where you are should be in either a south or easterly direction but when you plan to make this trip will be the key. I have often thought about doing another cross country slow ride but I really do want to do the north route across the top of the US and that takes perfect timing and planning to hit the weather right. From Washington straight across to NY this time of year would be a disaster in the making. I have done the southern routes a couple times already but have to get up north to see Montana, Wyoming and Idaho which are all on the bucket list.
Keep us posted Plumb.