RE: What's next.
OK.. The p2K2 is a great motor and will drift just fine..
A 19x2T will just offer a little more top speed... its not needed for drifting but is fun..
Your current motor is a good choice and will offer Punch out of the corners... which is needed to kick the tail out and keep it out..
Not to sure on your charger as I would have avoided that one in the first place..