The charge jack is just a piece of plastic, into which you will insert the charge lead that is attached to your switch. A lot of times they come with the radio, but if not, here is one:
http://www.horizonhobby.com/Products...?ProdID=ERN147
You generally need to remove the wing to transport the plane, unless you have a really large car or fly at your house. The rubber bands will not only degrade from being permanently stretched, but the fuel will degrade them as well. I usually buy a bulk pack of rubber bands at Staples and use a fresh set every time I fly.
http://www.staples.com/office/suppli...3579:SS1037866
If you do have to modify the plug on the Voltwatch, it is just a matter of clipping off a tab on the side. Some Futaba servo plugs have a small plastic tab molded into the plug. You can just sand it off or slice it off with a knife.
And you do continue your breakin process in the air, running the engine rich and slowly leaning it out. I run them on the ground until I get a good reliable idle, and then fly them. Just don't go too lean too fast.
Good luck