can this be fixed or should i start all over?

specs: i5-6200u, hd520, 8gb ddr4, 256gb ssd

hello,

i need help to decide if i can fix my installation or if i should start all over. basically, being stupid, i followed a random youtube tutorial instead of a proper one, to install sierra. so i didnt change the default config.plist to one tailored to the hd520 (talking about rehabman's configs).

after that i made a 2nd partition and installed windows10, so i have my clover set to boot both sierra and win10. what would be easier, reinstalling everything from scratch following a proper guide or fix my config.plist with rehabman's settings?

thanks for any answer!

edit: also i installed voodoohda for sound instead of applehda (it is working though). could that also be completely removed without starting over?