I don't know the compression height. You have two choices of rods, what's it matter?
I understand where you are coming from, but what I am trying to tell you is it ultimately will only matter to your "package. Oppy blocks, pans, alignment dowels, shoot: even head bolt alignment, deck height, inspection cover flatness, connecting rod reliefs, valve guide-to-seat alignment, intake ports have minor differences block to block, crank to crank, casting to casting. We are all faced with it one way or another. When I used to drag race, we fought lifter bore alignments, rocker shaft alignment, on and on. If you want a blueprinted engine, you will have to find an intelligent machine shop, some patience, and most definitely some cash.
Just like you said, a compression height can vary piston to piston. Most of the time they're never truly 0.00" flush, if ever. I had one that was -0.008" on cylinder one, and -0.012" in cylinder two! In engineering, it's called stack-up tolerance. A thousandth here, a thousandth there, it all adds up. You are wanting specifics that while they can and may be offered, probably won't be consistent with your engine. There's often a variable. Hence the "within specs" answer.
So when it seems like people are being secretive, or are obfuscating the truth, please understand we are not like that here. We never intend to come across as mean-spirited, send you out the door with a pat on the back and a smile and a box (or 20!) of parts. We want to help. But some parts of this beloved sport are indeed trial and error, with limited information, and classic blood sweat and tears.