So I have recently discovered that I cannot throw this disc properly except while putting. This is due, mostly, to the wind in this area, but also that I am not used to the depth or the level of power this disc requires. If I can throw a Mako3 around 300 ft, how far should I be able to throw the Aviar P&A? Also, is it worth it to grab a Champion to use instead of an R-Pro or DX?
1) With good clean form, you should be getting ~250' with an Aviar if you can throw a Mako3 ~300'. Probably even more if you get enough height.
2) Champ/Star are good for durability/predictability, but DX seems better for glide. If you are learning putter throws, I'd go with DX. It will give form feedback better than the premium plastics.
If you don't mind the feel of a Nova, I'd recommend that. I recently gave it another try and it has been really great at cleaning up form. It flies exactly how you throw it; instant feedback on your throw.