Re the balance wires you simply plug them in to the charger, connect team leads to the charger too and your are off. Some single cell lipos just charge through the balance leads because of the smaller voltage but not 3 cell.

I use hobby king for lipos, not that many places make lipos so many lipos are the same just re packaged. I have many hobby king lipos good.

Regarding a charger, if you are certain to stay in the hobby and progress maybe a good charger that will cope with your growth is an investment (copes with 6cell lipo, discharges/cycles). However if not sure many cheap ones are out there.

Good luck and enjoy, 3cell on a 1/16th sounds fun!