You know... I'm actually genuinely curious about your situation too. I respect that you've done pretty much everything that can be done for the grids you're focusing on. But to be very honest, for the time and $ you've spent... The performance? Damage? You've been showing is... for the lack of better word, not quite there, compared to all of those I've seen on nutaku spending the same amount of time and some even with less $.
Well, I gotta leave for work soon so I'll get back on researching with you later.
But for your fire team, just hang on til Horus. It will do a lot better after that (plus maxing your fire grid). And imo, you prolly could have played a lil more aggressively in that AQ run.
p.s. Who did you spend your $ on anyway?