Im running a i7-4790K which sits at around 87-90 underload. GPU: EVGA 970 which runs at 80-85 (Not too much of an issue).
I havent tried flipping the fan on the NH-L9i, will certainly give it a blast and see what difference it makes.
I guess the other opinion is to upgrade to a NH-L9x65 however am not sure if this would be better than the AIO idea.