eschew the single plane for a dual, the smaller cubes need all the help they can get in the down low and torque department. go less wild with the cam and try and stay around .475-ish and 260~275-ish duration. i think those pistons are fine for a mellow build and with the right headgasket you can probably get the compression to a decent number.
the heads are likely the most limiting factor, but will probably be fine for a mild build.
i wouldn't run a 750 DP with that kind of combo. i'm not saying it can't be done, or that it wouldn't be fun... but i think there are many other better choices.
a huge consideration is stall and gears. what do you have there currently? are you planning to upgrade those areas as well? those are a huge influence on overall performance.
