No prob. I looked into all of this when I built a b16 a couple of years ago. Most people used the compression calculator on c-speed's website, but did not factor in the deck height to compensate for the b16a block height being 7mm shorter than the b16b and b18c. I had a number of conversations with omniman (if you've ever heard of him) to talk about compression. He put up a few threads on various Honda boards to confirm that the compression would actually be 11.4:1 vs. the 10.8:1 most people were claiming.

I milled a head, but wouldn't recommend it after doing so. It's an easy way to "cheat" and raise compression, but afterwards the timing marks on the cam gears are off. It's not bad, but you have to make sure they are set properly for tuning so you don't have any valve to piston contact.

I'd consider going with a nice set of aftermarket pistons (Wiseco, CP, etc.) for the fact that if an off-the-shelf won't put the compression where you want it, you can get a custom set for not much more money. Leaving the head alone and raising compression with pistons (and the flat face valves you got) is the best way to go.