Used???? The electrical systems can have cumulative damage over time if a surge gard has not been used from the beginning....chance are the tires have too old of mfg date and have been driven over 62 mph or have sat with wrong pressure causing unseen damage there......along with axles and bearings....
No telling how black, gray, and fresh water tanks have been cared for...or what has been put in them.....not to mention proper roof care....if you are a always fix something and replace something person, a used rv is a perfect buy.....course with new on it is continuous maint...too....to maintain it....make sure you put a good electrical outlet in your drive where you will store it so you can keep it plugged in....good luck with your new adventure...
sounds like you have a good tow vehicle, just stay below the GCWR....find out what that number is.....and by doing that you should be okay on axle weights..
but you still have to weigh hooked up and check at a cat scale....drive slow as your house is with you, whats the hurry.....