Set charger for lipo mode, 3S (3 cells) and 5000mah for capacity. Charger should do the rest and should charge at 5amps which is a 1C charg rate as mentioned above.

I charge and balance everytime since my balancing charger makes it easy to do. I would start out this way and if Blinky indicates its not doing any balancing, then you might consider skipping a few charges between balancing.