Can I not just replace the ESC 45A that comes with the F-18 with this one? Volcano Series 60A Brushless ESC. We can do what you desciibe. Also, you say the 45A is perfectly fine. What limitations am I going to run into with the upgraded battery? Are you saying that additonal servos (beyond 4) would not be possible without the upgrade? I just want to make sure the plane is usable out of the box or if I should order an upgrade ESC now.

-James