Make sure you get new rings for your rifle, as I imagine the rings you currently have are 1" and not 30mm. You'll need the 30mm if you get a SS from SWFA. I'd look at Talley for their LWT mounts as they'll set you back about $40 and are a good solid mount, most other mounting systems will cost that much for just the rings.
Parallax adjustment isn't going to help or hurt you on a fixed 6X, I find parallax adjustment isn't really necessary until you get around 12X or more. If you want a more affordable 6X scope look at the Weaver classic K series scope. Then there is a lot of 3-9X40 scopes in a $200-300 price range that'll serve you well.