I was originally going to buy an OKHobby 150a ESC, but would much prefer something with support & a proven brand.
Very wise of you on brand choice.
What platform is it you have, F1 the buggy ?
That motor alone will weigh nearly 2lbs and the same if a large mah Lipo, thats nearly 1/3 of the weight already.
I retired from RC, now life is all about guns and long range shooting.