I generally don't think of a T-6 as a seat of your pants machine, to be honest. The airplane does give feedback like most others, but it is much faster than you would think in terms of approach and climb speeds(when it really counts) and does have some dirty secrets. I find that using the numbers and passing through "gates" at different points in an approach is still the best way to end up where you want to be. You'll find, though, that it's an easier airplane to fly if you sort of step outside convention in terms of how we as civilians choose to fly. Circling approaches in the T-6,for example, are much easier in my opinion than a typical traffic pattern.
It is not an airplane that you routinely want to fly slowly and it will absolutely do nasty things to you if you don't stay on top of the numbers. It makes drastic moves when stalled and the stall speed will increase dramatically with load. The T-6 was designed so well from an aerodynamic standpoint that it has what I consider to be textbook handling characteristics. When it's stalled...it just stalls and that's that. No questions asked and no in between. But when you break the stall it stands right back at attention(essentially). They don't recover from spins like a Cessna, either. You have to fly it out using your head as much as your bottom. There were MANY T-6s crashed by trainees during the war(on the order of thousands if memory serves) and it was the last stop before fighters were issued..the guys flying them had more than 20 hours(though still very low time, agreed).
I don't think of a T-6 as the hardest conventional gear airplane I've ever flown....ground handling is actually not that bad, but it is a "numbers" airplane in the air. And if you're not used to a little energy management then you'll need some dual.
I agree about the noise canceling headset, they don't work in environments with this level of noise and you'll find that they're louder than a set of regular David Clarks.