I finally got my hands on a Kiss Ultra Flight Controller.

Huge thanks to Konstantinos Dean Gdontakis

I'm having a few issues getting the OSD to work on my set up but I'm sure ill figure it out.  I'm planning to turn this 4s build into a 6s and doing so I'll hopefully get it all working perfectly.

It does fly very nicely. I wouldn't say its a massive difference from BF4.3 but there's some improvement for sure.