Brushless Setup Savage

Hi
I am new here and at first don´t judge me because of my english.
I am from Austria and still a student.

Well.
I can get a Savage for little money and i want to convert it to brushless-POWER

Like i said i am a student and i am not that rich.

Thats my setup:
This motor:
KD36-74-09XL

http://hobbyking.com/hobbycity/store...idProduct=6678

Lipo: I got 4 or 5 3s1p 2450mAh laying around here, maybe 6s1p for speed and 3s2p for long driving.

I don´t know which esc i should use, please help me, BUT it has to be cheap or not soo expensive. Even a used one would be okay.

Thanks and Danke (german for thx)
DanteX