well first of all the build looks nice, but i think you should change the PSU first its kinda overkill for the build secondly i am doubtful about the reliability of NZXT PSU's. you should go with something like this one
Seasonic M12II-650 BRONZE ATX 650W: http://www.amazon.com/dp/B00607JMI8/?tag=pcpapi-20
for about 90$.
and as for the mobo issue, your HAF 932 is a full tower ATX case and your mobo is an ATX one so it should fit perfectly leaving plenty of room inside the case.