If your just starting out and running in stock 27t class you should not be dumping cash into anything.
A few basics you should prepare for when u have extra cash:
-BRP from bumper(first purchase)
-save cash for spare parts
-get the right tires that the fast guys use at your club, dont spend money tires that are not race worthy(skip the spinner rims)
-having 2-4 battery packs is key to racing a full day, with only 2 plan ahead to make sure u have time to recharge thepacks
Your motor will last a long time if you care for it, clean(with motor spray) and lube the bushings afterwards. From time to time depending on how much u race you can have a local racer cut the comm and replace the brushes. Fact is new racers are actually pretty easy on motors since they tend to do less laps and apply less load to the motors.An a-main guy getting 30 laps a race may need to rebuild sooner than a new guy only getting 20-25 laps and is atually babying the motor. Stock motors should last a year if properly cared for it depends on how often ur racing.
2 and 3 run motors is normally exageration but guys running low turn mod motors do rebuild often sometimes very often. I would steer away from mod racing untill you are very good at stock racing.
Batteries today are better then they have ever been, run time is high and voltage is too. There is no super pack that will kill a stock motor. Motors stock or mod are killed by drivers overgearing them or using the wrong motor in the wrong applications.
Most of all get as much practice in as possible. The Tc3 is a good car and needs no hop ups to run fast and up front. The only thing keeping the car from the front is the driver
"Without Rules its just Backyard Bashing!"