RE: Which shot size and choke
I agree with longbeard. You are going to have to try different stuff out for yourself...but a good place to start is with the Winchester Supreme or the Federal with FlightControl Wad in either a #5 or #6 shot. If you are wanting to save on a choke, then I would try a Undertaker choke which will run around $20 or so. Best of luck this upcomming season!