Maximum PC

So im building a new rig for gaming, but this time i want a htpc case. So i decided on the Fractal design node 605, with atx, micro-atx and mini-itx for factors. I wanted to go standard atx with it, turned out however that a optical drive will only fit with a micro atx or mini tx mobo. So intead of the regular size asrock extreme4 mobo i saw there is a smaller micro-atx version called ASRock Z77 Extreme4-M. Are there any drawbacks with using that for a gaming rig instead of the atx version?
Im not really that into tweaking the rig, so i will probably never use dual gpus or anything, at most ill overclock the cpu a little. Going for core i5 3570k, and a radeon 7950. Anything im overlooking?

The only real drawback is the Realtek LAN chipset, which IMO is the worst LAN chipset on the planet... Vs Broadcom (found on the full ATX version) or even Marvel, you can expect up to 4 times the latency. Not so great if you're a big-time online gamer. But ASRock does bundle it with XFast-LAN software which may be able to tweak it better than the default drivers.