Compression ratio what to do??

I'm building a new 340 for my 68 GTS. I have a 340 from a 69 gts. Steel crank .030 over with silvolite 4 dimple pistons. I plan on using the .028 head gasket with X heads. Using Lunati 703 cam. I cc one on the head chambers and it came in at 74 cc. After running the calculations I come up with about 9:1. I want to be at 10:1. Question: would would you do, shave the heads or use different pistons to get to 10:1? Or should I care? The difference between 9:1 and 10:1 is negligible.