I just purchased my 1st motorhome 1988 toyota seabreeze dolphin 3 weeks ago.Safety is my #1 concern.I think the thing has been sitting for at least 5 years.What should i have checked before operating for safety reasons?It has propane and electric functions.I have stove top,microwave,fridge,roof a/c,propane heater.I have no generator,and want to be 100% self contained,live aboard,any suggestions?Thanks!