Hi Denise,
I am working with a number of people who are doing or considering doing the same thing. They want to move to Sonoma County or to downsize within the county and appreciate the current market values. The entry level market for homes is extremely competitive with multiple offers the norm, and declining inventory so it may take you a while to find the right property, depending on your price point.

Rincon Valley schools are highly regarded, in particular you have good proximity to Maria Carillo High School, so in general I think you would have a ready rental market for families who have school-age children.

There are a number of good rental agents who can manage your property, and most of us can give you a good feel for the rental market for your new home. Please let me know if I can help you further.