Doug, welcome to iRV2.com. We are glad to have you join us here and we look forward to helping with your questions. Sorry to hear of your uncle passing.
The most important factor of these things is proper maintenance. It sounds like you uncle has take good care of the rig; this is good and I would not worry about anything major. If it has been a while since it was driven I would change all the fluids, possibly belt and be sure to check on the condition and age of the tires. At about 6 years from the date the tires (rectangular box wit four digits inside - first two are the week and last two are the year of manufacturing) it is time to replace, even if the tread looks good. Then giver it a bath and some polish. Take it out and get to know it and have some fun.
I am sure you will enjoy the website. If you have any more questions, start a new thread in appropriate section.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7