Check the Lian-Li PC-TU200B or the TU-200A or TU-100A or TU-100B
all Mini ITX
Video of the Lian-Li PC-TU100 not sure if A or B by Tek Syndicate, he could fit a decent system.
http://www.youtube.com/watch?v=lOGNUSvzjMI
Hope this helped
Edit: It should accommodate your GPU and power supply should also fit.
Edit: The TU-200s support ATX PSUs in comparison to the TU-100 which use SFX. Also here's the pcpartpicker link I put together to check compatability.
http://pcpartpicker.com/b/WH6hP6
as you can see the EVGA GTX 760 fits in there. Hope this helps and it's definitely vertical for the motherboard, I will say though that cable management won't be easy and there may be lack of coolers but there are coolers from Noctua that fit like the Noctuas here http://pcpartpicker.com/part/noctua-cpu-cooler-nhl9i
and here http://pcpartpicker.com/part/noctua-cpu-cooler-nhl9a and the PSU is sort of in the middle which might restrict your wantings.
But I have a solution to your PC-Q30 Modular power supply problem with this
Silverstone Tek 450W SFX Form Factor Power Supply (ST45SF)
and this
Silverstone Tek 450-Watts SFX Form Factor Full Modular Power Supply with 80 Plus Gold, SFX+12V single rail, ST45SF-G
Hope this helped you out