Sweet! Congrats, that looks like a nice combo! I just finished building the sct410.3, great kit, great truck! I don't actually race but do run it on a track at my house. My brother and I race each other with all types of rc's. 1/10 to Xmaxx, we have most everything in between those sizes.
I built my sct out with rtr takeoff electronics.. max 10 sct 120a and a 3670 2600kv motor.
20t pinion on 3s is about all the power I can really use out of it.. of course I selected this combo for price first,$115 and 4s capability.
Not sure if it'll ever see 4s but nice to have the option.
Good luck, I think you'll find the combo to be plenty capable. Just remember the 4300kv spins a bit faster than the 3600kv you bought, so you'll likely need to go up a tooth or two to achieve the same top speed as say 4300kv. You should have a touch more low end torque though, which I happen to like myself.