Bill,
Looks like I'll be able to place 4 250w panels on top. I'm going to make up some cardboard "templates" the size of the 250W panels & place on the roof. I think I'll be able to place them so that I can still use the ladder.
Yes, I was also thinking about the rear cap. I don't have the third brake light on the backide of our coach.
Also, thinking about mounting the charge controller in the same compartment as te Xantrex. I'll be abot 4 feet from the battery bank.
Good idea on the Trojans. I just need to locate a local supplier. Can't image what shipping charges would be.
Thanks for the ideas!