Well, It's done. I think it went alright even though it took me forever

I'll post some pics soon. I have a few questions though. My PSU is a Seasonic M12D 850W and my mobo is a MA770T-UD3P. This was my first time ever doing something like this so I got stumped on a few things. I plugged the ATX 12V 4Pin into the ATX_12V_2X4 Space on the MB but there's an extra 4 pins there so I was wondering why (what does an EPS12V 8P connector do? I can't find a place on my MB for it.) And also on my mobo there is SYS FAN 1, SYS FAN 2 (that's where I put the fans in) and there is PWRLED and PWRFAN. Can I plug fans into those places as well? Finally, one last thing, the POWER SW and RESET SW wires that came with the case I wasn't sure where to put them because it didn't say in the manual so I put them here

and it seems to work. Well that's all. Sorry for all the questions, this was the first time I ever did something this big :O Here are some before and after pics Old Case:

HAF 932