Regarding the PSU orientation, my case pulls in filtered air from the underside, which is how I want it, as it'll stop it from pulling air from the GPU, especially when I put another one in there.
The sticker doesn't bother me all that much, though I have been thinking about it today, and I could make a cover of some sort, I'd rather go down that route over using a sticker.
the fan won't spin up. my old AX750 used to barely ever spin up and my current RM750 never spins up. so yea, not much pulling hot air there.