If your primary concern is the engines I would have derebery look at it. The surveyors around here are going to start it up, look for leaks and thats about it.
I've used Casey Autem before. His number is 580-490-1660, not the best, but not the worst either. If it were me buying I'd have Casey and Derebery look it over and run it for about 2 hours. Carrollton is about an hour drive for me and on my way to the lake if you need help with anything else.