If you do enough research you should be okay. Check out tonymacx86.com, lots of good info there including installation guides, hardware guides, forums, etc. Good luck!

I would suggest getting the previous generation Mac mini from eBay or Craigslist. The newest models have soldered memory (and possibly SSD as well), upgrading later will be extremely difficult, if not impossible for most. Upgrading at purchase sucks your wallet dry (Apple's memory prices are re-DONK-ulous...) If you go the hackintosh route, two things: 1) make sure your hardware is compatible. A lot of hardware will work, usually depends on driver support. Hackintosh can become a time consuming endeavor if you don't have hardware that just works. Example: ATI Radeon HD 7xxx video cards. OS X won't boot at all unless you utilize the EFI partition (your disk must be GUID to run OS X). Then, it may boot but the particular model may not be supported (e.g. 7750 and 7790 are okay with some kext tweaks, 7730 NOT okay. Don't ask how I know this...) Sometimes ridiculously old cards have more support than newer cards, like an nVidia 8500GT based card. 2) Making bootable media for installation is by far easiest from a mac. Probably possible from a PC, but could also become time consuming and frustrating.