I have the first gen of Dji F550 kit with 2212 960k and opto 30A esc . Controlled by wkm and has H3-3D,5.8g video transmitter , Groud station.Mini iosd, at the moment . Running 3 s with stock 10 pro'
Please give me some advice .
Can I use the new Dji 9045 selftight Prop's on with 3S battery ? Or must use 4s? It's very hard to find 1038 prop's now in NZ.
I looked new power system E310 and E 305 800kv, worth to upgrad ?
E310 VS E305 which one is better for my heavy F550? I very like the Led on E310 but not offered on E305.
Last question is Can I use my old Dji OPTO 30A esc with 2312 motor(still preform same as the 410s esc? That's will be easy for me
Thank you for your time

I would upgrade to the E305.

Yes you can use the old Opto ESC with the 2312 motors.

I put the E305 on my f450 and wow what a difference