There's 83mm between the motherboard and the frame front. So a single fan should fit just fine. There's no room for the second fan though, the case isn't wide enough for a 120mm fan/rad to overhang the motherboard.
Thanks for the reply! Good to know that there isn't enough width for any kind of overhanging fan. I'm not planning on running an X99 chip or OCing much, so using just a single fan should be sufficient anyhow.