In case all those naysayers haven't talked you out of it by now, here's Edson's specific instructions how to do it on your boat:
I have a Catalina 250 with a wheel, and everything said here is true. It is tough to get around the wheel on such a small boat. As one who has chartered up to 38' boats, I can tell you the wheel is always tough to get around on ANY size boat.
There's always a religious debate over which gives you a "bigger cockpit." If you're sitting at the dock (or at anchor) having drinks, the tiller is a bigger cockpit because you can swing it up. (But a removable wheel would solve much of that problem.) But while you're sailing, I contend that the wheel gives you a bigger cockpit because pilot sits behind the wheel, and two people can sit to either side of the wheel, which is space that would need to be left clear with a tiller.