Ditto. Either of the first two - the SS is better but costs more. Just a matter of the budget. I'd get more power however if trying to shoot at long range - I know many others don't agree, but I prefer 18-20 power for 200 yards, let alone 500!
Get *anything* but BSA. Get a Barska before you get a BSA, heavenssake. PM me if you want more (nearly worthless) opinions.