Because you will want to charge the batteries separately, you may want to consider just wiring the ESC power leads to one Dean's male connector, put a Dean's female on each of the batteries, and construct a parallel wiring harness to connect the batteries togther (two male connectors) running to a single female connector. I believe using a Wye servo lead for the two ESCs would be fine. It's how I've wired my upgraded SU-27 and followed the directions that extremeRC.com provided.