I would run what you have just to knock the rust off for a bit.

See if the track in your area is enforcing ROAR approved motors. In my area the most common motor is the Trinity Punisher which is an outlaw motor, it's cheap and has helped end the motor war. Folks can still run their "team motors" if they prefer, but the $75 Punisher is every bit as fast as any $150 motor on the market.

ESC's haven't changed much but the XR10 series is one of the more popular ESC's I see locally. I see you're in Texas too, so chances are your club does not follow ROAR restrictions either, I race at Thornhill in Hutto,TX myself.

Battery tech on the other hand has changed a lot, the name of the game is low IR, pretty good video here explaining how to get the best performance out of your packs:

I use an iCharger 406 Duo and Trinity White Carbon and I will cycle my pack just before the mains.