BG and RES can cross but it is not common in normally stocked ponds. Nothing to worry about for your situation.

Assuming you are picking up 2-3 inch BG and RES then stock 400 BG and 50 RES. Also get 3 lbs of FH. Wait to stock LMB until fall and stock 25 6 inch LMB. Be sure of the fish (don't get HBG). Be sure to get near equal #s of male and female if possible.