Scott, will you be hunting on public or private land? Either way, I would suggest you wear orange. I wear orange and usually get six or eight, eight being the limit, on every outing.
As for the gun, a 20 gauge should be perfect. I take my 12 gauge Mossberg 835. After a half an hour it gets heavy!

I used 7 1/2 shot last year, but I will probably use 6 this year.
Let us know how you do!