There....fixed that for you.
In all honesty. I love racing the street bike, but it is more expensive. Tires are more, entry fees are more, just about everything is more. I've been on a sumo just a couple of times, and have to admit that it's really fun.
Racing is one of the most fun things I've ever done. Highly addictive, incredibly fun and I think you'll find that no matter where you race there will be a sense of "family" associated with it.
Best in your decision!
Scott