Kuba, looks like a nice little setup.

2 things came to mind. First, I didnt see where the intake was, guessing it would go in the flowering room? Plus I don't know much about the ionic air extractor and how it compares with an active carbon filter... got a link for that or anything?

Also, have you thought about a 250w hps? With a cooltube and proper ventilation you could do it...

All depends on how much you want to invest I guess. I got away with less on my first grow, but made the extra investment this time and I'm glad I did it.