First off WELCOME to the group and wonderful world of SUNLINE ownership. Sunline is one of the very very few RV's out there that was built to last decades (with proper maintenance). I'll offer you what info I can about your new home.
Standard features: electric brakes on all wheels, 12-V electric water pump, 6 gallon gas water heater, 25 gallon gray water tank, 25 gallon black water tank with marine toilet, 32 gallon fresh water tank, double stainless steel sink, Shower & tub, two - 20lb. standard LP gas tanks, 4 burner cooking range with oven, range hood with fan & light, 12-V light system w/converter & chrger, 5" button and Wrap upholstery. Empy gross vehicle weight approx 3600 lbs, gross vehicle weight rating 5,000 lbs. 25,000 BTU furnace with auto ignition.
Others should be along soon and contribute addition information for you.
First thing I think I'd do is get a ladder and get up on that roof to check all seams/caulking. You DON'T want anything leaking. Place some plywood on the roof (prefferable with some old carpet attached to the down side), 2'x4' size would span the roof rafters quite well. You DO NOT want to step in between the rafters or you WILL go thru the roof.
OK, I've opened the door, now others can add what I've forgotten,
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