That ESC is fine for stock, I ran the RS Gen2 in my F1 for a couple of years never had a problem. That ESC is the same as the Spec except the programming.
I run multiple cars(6) so my equipment choices may not suit your situation. I use an icharger 406 and have transponders in all my cars for ease of use. No last minute running to swap after forgetting no getting to track and realizing the transponder is in a car at home.