Can I hold out?

I'm gaining mobility and strength in my shoulder every day, and feeling better and better. Ran again today, took 1/2 minute off my last time around Lake Harriet (still nowhere near where I was this spring). I'm itching to get out and ride. I hear about other people hopping on the bike soon after surgery. Thoughts go through my head: "maybe if I don't race and just ride around" or "maybe I'll just bike commute." Of course I can fall on the Greenway too, and there are plenty of idiots and road ragers behind the wheel out there. Is it worth the risk? At this rate I'd be at the back of the C race come cyclocross season.