Re rifle choice, I have a high end PCP match rifle as well as many match springers. I have found that there is a small advantage to the PCP, but the match springer teaches you to follow through after the shot breaks, a lesson that is required for good PCP scores also.As previously mentioned the feinwerkbau 602/ 603 single stroke pneumatic is also an excellent rifle and can be found for $500 to $1200 for the 603.I have shot some excellent 5 shot offhand groups with all my rifles, even my old feinwerkbau 150. As far as match springers go, in my opinion the finest ever made is the anschutz lg 380, shoot one back to back with a feinwerkbau 300s and you will see what I mean.
Aaaah......just get the new rifle now. The fundamentals will progress anyway, and you'll just be happier in the meantime. Mike