I might be slightly biased but I say, get on with it, lol. We've loved your 14 bus and haven't had any issues of consequence, just typical minor stuff, and even thats been minimal.
The obvious stuff, get a qualified inspector to go over it head to toe. I think we spent $600 -700 but totally worth it. They found a ac unit going bad, not bad, but the sellers replaced it before we bought it.
Just thought of something else. If it has heated floors make sure and turn those on and test them. I don't know if 15's had the issue but the wiring on ours, and many others, was installed incorrectly. We had an arcing issue and feel lucky to have found it. Easy fix, but check for it. Our floor thermostats are in the half bath and under the sink is where the connections are.