I've owned 2 airplanes. Both 172's. It's wonderful to have the option to head out to the airport anytime you feel like it and go flying for a while. Or the flexibility to fly around for an entire day just airport hopping. And then long trips are great because you can take your time, drop in on grass fields or whatever looks interesting, and you are not charged a minimum daily fee.
But no matter how you slice it, renting is aways cheaper. Try as you may, you can't beat the cost of renting. Hangar, annuals, maintenance, insurance, surprises, it's always costs more than you planned.
Next time I get an airplane I'll get a partner. Planes sit most of the time so cut your fixed costs in half with a partner or two. But you shouldn't think about doing that now either. Rent for now.
Fying a small plane is a thrill and I still enjoy it after about 1,500 hours in the two 172's I've owned. For instance, last year I flew the Lewis and Clark Trail. Took them three years round trip. Took me 40 hours in a 172! You can't do that in a rental! Oops, there I go again, trying in vain to justify owning an airplane (I'm sure it's a disease).
Forget about owning right now. Just go rent. Fly as much as you can. The more you fly (certain maneuvers), the better you will do in Primary. The T-34 is just a glorified 172 and you can simulate T-34 maneuvers very well in a 172 or other small plane. It flies almost exactly like one except it climbs a little slower and isn't aerobatic. As for the T-6, it's a glorified T-6, so still basicly the same.
Keep on renting, you'll get much more flight time in the short-run if you rent. And that's what you need right now. Solid flight time while concentrating on the specific maneuvers.
Once you get to flight school you won't even think about flying civilian airplanes for a long time. There's much more work to do.
Don't worry about getting checked out in more expensive higher performance aircraft either. Practice in the 172. Don't go joy riding, practice! The Navy trains on every flight, so should you.