Yeah, that will work as long as you don't exceed the current capability of the power supply. To make things a little easier, you can use stackable banana plugs, like this: http://www.partsexpress.com/pe/showd...number=091-334 (If you are unsure about the spacing, you can use individual ones).
Shure! I always make deans charger wires.
YOur chargers should have come with a set of gold plugs... you could just use them along with some wire and deans males to make a convenient cable.