Is there a way to set a sitter distance radius vs. a walking radius?

I'm new to Rover as a sitter/walker and I want to provide all of the services. If I am doing walks or drop ins every day in multiple locations, I'd prefer to stay closer to home. But if I am offering a house sitting option, then I don't mind driving a little farther. I don't really know what the demand is like yet for either sitting or walking, but I'm wondering which distant radius I should set to get the most requests. I'd hate to turn down my first requests if I set my radius too far, you know? Also, if it's a walk or drop in, then will people most likely want to hire me over and over again? If it's just once every so often, I don't mind the extra driving. I just don't know what to expect.

Thanks!