This was my first PC build ever. Have a Vive coming in May and wanted to get things ready and save a bit of money over the bundled PCs. The build went pretty smoothly minus originally having a PSU that was too long for the Cougar QBX case.
I'm really happy with the case, but it was a bit of a challenge finding a PSU that would fit. I ended up with the Thermaltake just for the fact that Best Buy was close to me and it was the only PSU they had in stock that would fit. The case says the max PSU size is 140mm (long or deep however you want to describe it.) They also have a pretty strict rule on what orientation the power plug can be facing. This is because the PSU is right up against the bay for a slim optical disk drive. The way the internal PSU cord fits into the PSU would block the bay if you don't pay attention to their specs. Since I'm not using the bay for a drive, it wasn't an issue for me (though it was still tight.)
The only other note on this build is that with this board, the SATA connections are right up against the PSU, so you can only really get one or two SATA connectors attached.
Aside from that, I'm really happy with how things turned out!
EDIT: I did end up installing two Cougar 120mm case fans. Things never got dangerously hot inside the case, but approaching summer with no AC in our house, I figured it was better safe than sorry. The Cougar fans are pretty great. Pull in a lot of air and only 17dba. Super quiet