Not sure on the # for the 90 amp controller. I believe it is the 90 acro or something like that. A call to Hacker would straighten that out.

I believe if I had never put the 24-12 on the model I would have had no problems with the 77 controller. But the new 90 is a much better controller with some nice features, so I would recommend it.

Even with the new 90 amp controller I would not recommend using the 24-12. It is too easy to get the motor too hot and demagnetize it. That is where all my problems as noted started. So I'm stayong with the 22-12. Frankly, the performance is excellent with that prop.

The packs are exactly as you stated, and I am using two Orbit chargers.

Hope this helps!