Sounds like you are taking on a fun project.
Lots of people on these forums are into modifications. Not so many this big, but believe me, there will be lots of interest and help, I'm sure.
Good luck, and have fun!
Norman, 2008 Winnebago Adventurer 38J, W24, dozens of small thirsty ponies. Retired after 40 years wrenching on trucks! 2010 Ford Ranger toad with bicycles or KLR 650 in the back. Easy to spot an RVer, they always walk around with a screwdriver or wrench in one hand!