Internals Swap

Ok, on my RSX-S I do not plan to add anything to the engine, just replace internals. Stock they run 11:1 compression, if I took out the pistons and replaced them with 12.5:1 Mahle Pistons would it cause any problems. I also plan to get Crower Stage 1 Cams, Crower Billet Rods, Crower Valve Springs & Titanium Retainers, some new valves, and rocker arms, but I have decided on which ones. Any suggestions, or would it work?