The charger will charge both the reciever battery if its a 4.8V NimH or NICAD and it will charge the Tx battery supplied with the bundle.

I would still opt for the bundle with servo's and batteries. If this is your first plane it just minmises the hassle of having to run around with finding servo's.

I have nothing against HiTec servos though, its just that you're buying a Tx, may as well get teh bundle and get everything at a greatly reduced cost.

Once you move on from this plane then I'd start trying out different servo brands. For a trainer it makes little difference what servo's you use. I have Tower Pro S5010 servo's in my trainer. They were cheap and ths far reliable.I use Futaba, JR and Hyperion servo's on my planes now simply because they're what I can buy a my LHS. HITEc is nowhere to be seen. KISS when starting out.