What would YOU do?

It looks as if my 'intended' 340 build may have to change some as I may not be able to get away with running the TRW pistons I had planned on reusing (11.5:1 with cc'd 1,88 'J' heads). Pump gas ain't what it used to be. (These pistons are 12.5:1 with stock chamber bowl size, hence the cc job)
If I go with a milder set of KB 10.5:1 pistons, the J heads would probably drop me a point over standard (down to 9.5;1) I have a set of untouched X heads with 2.02's that I could use, but here's the clincher...
J heads have been previously cc'd, ported, polished, knurled guides, 5-angle competition valve job and probably just need a good hot tank, strip and clean-up.
X heads are bone-stock, untouched with over 100k on them.
I plan on running a cam close to the specs on my old one:
lift 4.50/4.75
duration 298/308
A833 4 speed
either 3.55 or 3.91 diff
Which heads would you choose, and why?