A word of caution if the RV is an older model... we got a bunch of stuff from an old camper and couldn't use any of it. stuff was rusted through (water heater and furnace) and anything plastic cracked. (Black tank, toilet) Avoid any used plastic stuff if possible unless it was fairly new.
My build thread:http://www.skoolie.net/forums/f11/build-thread-for-haulin-oats-and-goats-11237.html#post113500
A gal, a guy, three cats, two dogs, one rabbit, and one goat, traveling the country together.