Used to do some BMX.
Diamondback Joker for the park
Diamondback Viper X feather light for the dirt racing. Never did any of it very competitively but had a lot of fun doing it through my childhood and early teen age years.
Dude, those G29's are actually a really good deal for a decent bike. My buddy has one and rides the crap out of it. Those wheels are a pretty tough wheelset and can take a whole lot of abuse. Enjoy it man!