Bookkeeping Business Questions

How likely is a bookkeeping business to get traction if not offering tax services? My wife has over 15 years of experience as a bookkeeper and staff accountant for very small companies all the way to running payroll for close a thousand employees and everything in between. She is well versed in QB and has extensive experience running p&ls, balance sheets, advising owners where to cut costs and be more efficient, etc. She has also successfully cleaned up 2-3 years of disastrous books for a couple of smaller businesses. She is good at what she does and enjoys it, but is tired of working for someone else.

We are thinking to target much smaller operations, like 100k-250k revenue with no employees or maybe just a few, because we are thinking that larger companies will want a one stop shop and can afford a cpa, which we are not. We want to target the niche of really small businesses who are struggling to keep their own books and are unable to afford $500/month for the service. She could come in and offer more affordable services and automation would make things efficient. This would be our business model as all of the cpa firms in our area seem to do books as well, but they are not "cheap". We also know and have met smaller business owners in our area who complain about keeping their own books and the cost of a reliable bookkeeper.

From my research the lowest hourly rates are around $50. We live in a very fast growing metro area.

Thoughts from experienced freelance bookkeepers about our potential business model?