Consider the opportunity cost though. I'm sure you got into the Blad for more than 1450$, plus all the time spent getting it, etc. etc. I'd hang onto it because I believe it's a more versatile camera, can focus closer (something the 7 is not good at), and in general will provide you with plenty of great output until you get another 7. That's just where I'm coming from.
Stop worrying about grain, resolution, sharpness, and everything else that doesn't have a damn thing to do with substance.