Thanks for your answers
I'm not a newcomer to the RCs. I used to race with a Kyosho Inferno 4wd 10+ years ago but for a couple of reasons I stopped. Unfortunately all of my knowledge is around GP cars and for that reason I don't even know the basics of EP cars

.
So, now, I decided to work again with RC cars but this time with EPs (not GPs)

. The bad thing is that I live in Greece where we have not a lot of tracks to choose (there are only 2!

and their made especialy for 1:8 off buggies). I don't know if that details are helpful.
Based on your answers, about the ESC I should choose an LRP TC or an Nosram TC.
About the motor you suggesting a T6.5, right? (As I've understood a T3.5 would be too fast for a buggy and with less torque than a T6.5).
Thanks again for your help.
ps. sorry that my english are not the best but I hope you're understanding what I want to say