Winglift,
There isn't that much traffic on the NSRCA forum. There are a lot of good downloads available there and it's an important organization in terms of it's governing Pattern in the US for the AMA.
Whatever propeller your engine has as a recommended size, go with that.
I learned a ton after the 4 contests I flew this spring, far more than ever could be learned on the net. You meet a lot of people, hear a lot of things, and can get a lot of questions answered from guys that are really doing it.
If your controls are smooth and the rates are what came on the model's instructions, and it balances you're most of the way there. If the engine starts, idles, and transitions well, it's time to fly.
Hope it all goes well, I'd think that living in a big town like Indy there'd be a few Pattern guys to hook up with. Are you going to check out the Pattern Worlds or the Nats this year?
Chris...  <br type="_moz"/>