Max ... okay I used a Hyperion regulator the TiCool ... it can handle input of up to 48V. I only have one plane running on a lipo for the RX. I am using a 3S 400 mAh pack and that can give me a lot of flight. I estimate about 8 x 8min flights with ease. I used 3S because I do have some in store. Try to keep your plane light if you can ... no need to use a 2,100 mAh pack. Even the F3A guys flting 2M planes use about 150 mAh per flight for the RX, however they are not flying 3D though.
I just took delivery of my new Extreme Flight Extra 300 78" ... it will be running on DualSky 6350 motor, DualSky ESC. Wanna see how the motor runs with the new V2 ESC.