Damian,
Choosing between spending $37K for all the training, and purchasing an airplane and then hiring a certified instructor, maintenance fees, insurance, fuel, parking, etc.? Purchasing a used airplane is a minefield that you don't want to do without an experts advice, (someone that knows how to dig through the log books, maintenance records, and inspect the aircraft) to ensure that you aren't buying someone else's problem.
You need to weigh the cost / benefit of both options, then decide. I think finding a well maintained airplane, that is certified and equiped properly to accomplish the training that you are looking at isn't going to be cheap.
Mike R
NATCA FWA