Is it okay to have the Frozen Q resevoir like that? I thought about that for my build as well but was worried about the flow restriction threw the "fill port" that you have on the bottom. Since it goes from that point directly to the pump i figured it could have an impact. I couldn't really find any info on the web about it.
I do agree that it is really awkward to deal with both connections on the bottom though and i wouldn't mind changing my loop in the future to something like this.
haven't noticed any temp rise, i had it liked this since the day i got it. and temp stayed the same. only thing to note is to when you get all the air bubbles out, just top off the res pretty much to the top, or else you'll keep getting more air bubbles.
however, I did notice temp rise from not having the extra 240 rad.. and no push pull on 360 rad. roughly around 4 to 5deg under load. So my next plan is to get some extension fittings and put 3 fans to pull on 360 rad