I do not suggest going with a 3S pack if you are new to the hobby. 3S will make it crazy fast and possibly even uncontrollable for you. I say its best to get a good charger and 2S LiPO then a 3S LiPO.
Charger;
http://www.atomikrc.com/collections/...attery-charger
2S LiPO;
http://www.atomikrc.com/collections/...-with-uni-plug