that is what I decided to do... I appreciate everyone's advice very much, but it was just too conflicted, so I decided I'd do it the old fashion way, try it out, and keep an eye on things best I can. I have room to shuffle fish around, should things deteriorate too badly. for anyone interested, I'll let you know how it goes right here.
You'll definitely have some shuffling to do at some point. I've removed nearly as many fish as I've added due to aggression. You'll find that magical mix eventually.

