318 build up

This seems like the right place to ask a question on my own 318 build currently in the planning stages. I have a tired old bone stock 318 in a '68 barracuda. The thing runs beautifully, and the only thing keeping it from being a true daily driver is it's oil consumption; mostly from weeping past every possible gasket I believe.

I'm not after screaming performance; hell I wouldn't even tear into it at this time if it weren't for the oil leakage. But if I need to overhaul it anyway, I figured I might as well wake it up a just a little bit too.

I have the following parts at my disposal: edelbrock performer plus cam, performer intake and 600 cfm 4 bbl carb, mopar electronic ignition kit, and 340 hipo exhaust manifolds which I will run to dual exhaust.

My main question is what to do for heads? Everything I've read seems to suggest that I should stick with the small port original type, so as to not lose low end torque and drivability. This is to be a comfortable, hassle free daily driver that will see no track time. I was thinking about using the 318 heads w/hardened seats from Aerohead Racing - no frills but maybe the right choice? - I couldn't rebuild my originals for less than that. I have a lead on some rebuilt big valve x-heads for a good price, but I think I may be disappointed with them on this 318?

And I guess my second question is on piston selection / compression ratio for the goals I've stated.

Any help would be greatly appreciated! Thanks.