318 Build.. Zero Deck or Stock Deck Clearance?

And to me one of the most important things is to nail down the ICA first. Cuz if you close the intake too soon, or too late, with the compression already written in iron, well then you may be stuck running more expensive gas than necessary,to get the octane the engine wants, or running more gas through the combo, cuz the hole at tip-in needs 4.10s to be liveable.
I learned that the hard way. I'd rather have to buy gas one grade higher, than live with the hole or run 4.30s.
But There is another way; Build the engine for tightQ, whether zero-deck and .039 gasket. or 010 down and 028 gasket. Either way. Finalize your Scr. Then select a cam with the correct ICA to work with gas you want to run. If it ends up that you have to run a bigger cam than you wanted to,to get a handle on the Dcr, well there are still ways to deal with that(within limits,of course). If the Scr comes in too low and you have to run a teensey cam to keep the Dcr up, now that is a problem. But highly unlikely , in this case,heehee.Cuz the OP wants to run a 280H!