One of the reasons I was thinking of going this route is because the backfire g2s uses the hobbywing esc and people have swapped out the meepo esc and installed a hobbywing ESC without any issues so I assume backfire motors should also work with a meepo esc right?
The Backfire hubs are known for vibration issues. Their PU sleeves are without any harder core material and by wearing them out they develop unwanted vibrations. @J0ker3366 VESC suggestion is a good one. I did run hub motors from 3 different makers (Maytech, Meepo, Enertion) and amongst them the hubs you have run with two VESC’s doesn’t fair too bad.
If you are looking for a upgrade in ride quality and want to keep the simplicity of hubmotors, look into the Direct Drive offerings by Torqueboards or other vendors. With direct drives you can use full Urethane wheels.