Usually hackinstoshes have stability issues and require a lot of troubleshooting to get running on par with a native mac.
Also real Macbooks have a much higher build quality. Real aluminum, high quality glass and assembly. Multi touch gestures.
Yea yours is cheaper and prolly more powerful. But every time someone's built one that I know or read about there were a multitude of functionality issues. You have to use specific components to get everything to work right, and it almost never runs as 'snappy' as a native mac.
You will undoubtedly have to do some research to get the functionality on the same level.
I've seen crash issues, video issues, application issues, wifi issues, display issues etc etc.
Not raining on your parade, because it's a cool side project to do.
But achieving 100% functionality is quite a headache usually. Def cheaper and more powerful though. You mine as well just keep it on Windows or Linux though if that's what you're going for.
If you wanna use Photoshop or Premier, or Logic Pro you are bound to run into a multitude of problems from drivers, to crashes, to software functions randomly not working.