New
#51
Yeah, there may be no 92mm Slipstream.
A front intake fan is an option. I use one. Most people don't. It typically helps to cool HDDs and generally provide a little front to rear help.
I'd get the Nexus. I just looked at the New Egg reviews and everyone says it is very quiet.
I see you have an Antec Tri-cool in the back. Not sure how quiet those are, but they have a low speed, which should be OK.
I've never run 2 front fans and probably wouldn't. But you might order two and install 1 and check how well it cools and noise levels. And keep the other for a spare.