That is great news!
No expert by any means here, but at a minimum, i'd ask to check just as you would on a car:
-all fluids + lines
-breaks (compressor if air, hydraulics lines, etc...)
-all grease/joint points
-if there is a turbo, check it
-any leaks from the engine, trans, any gasket...
-any electrical harness (there might be at least one, since your bus is newer than mine)
Probably these are all obvious, and you thought about them, already.
I'm sure the veterans on here can think of more. And please, if i'm talking out of my @$$, tell me to shut up