Well, I've kept Striped Racers before. They are alot more active than Corns, and a bit more likely to bite, but not as much as other Racers such as Red Racers (otherwise known as Coachwhips), Black Racers, and Yellow Belly Racers. Currently, I own a Sub-Adult Yellow Belly Racer and I can tell you that while the bites are frequent, they aren't too bad at all.
If your Striped Racer is big enough to take pinks, I'd feed them that. If not, big Crickets will work. But I can almost gaurenty that you will need to feed it live rodents. Racers are very sight oriented hunters.
Also, I have talked to quite a few people that have gotten their Racers (of various species) to regularly take rodents and acclimate very well when they gave them UV lighting, much like you would for a diurnal Lizard. This is especially notable for species like Coachwhips which are well known for refusing to eat anything but lizards in captivity, and not acclimating well to captive life.
The Striped Racers don't get large at all. They
can reach 5 feet, but generally stay around 3-4.
If you have any other questions about them, feel free to PM me