You have enough with what you got, all you need is a cam not over .600 lift, some where along the same grind as an L88 and trw or KB hyper utechtic pistons, put good rod bolts in the rods and you're good to go, run the ovel port manifold.
I ran 11.50's all day long with a bone stock 454, with TRW 12 to 1 pistons,and L88 cam, torker manifold, 750 DP, in a 65 Malibu @ 3500lbs., No roller stuff, and that was over 20yrs. ago.
Zip.