Organizing leads for offline business

Hello, warriors. I have lurked here for awhile and learned a ton. I appreciate all the great info and have yet one more piece of information that I respectfully request from your vast experience.

I recently stumbled across an industry that relies heavily on location-specific referrals and most of the companies I realized don't optimize their sites for google rankings.

I think I could do well by selling local leads. My plan at the moment is to set up exact-match-domains targeting the larger market areas to capture leads in those areas. Such as "type-of-company-in-city-state.com" - whatever the most searched keyword phrase is.

I think by utilizing EMDs and using other basic seo methods I could outrank most of their companies in the serps and capture a large market share of the leads then turn around and sell them to those companies that are seo-ignorant.

I plan to scale the business up to several hundred sites each targeting a different location. I don't necessarily want to log in to several hundred sites a day to get my leads. Is there a way I can forward the leads to one site and have them organized location specific? I don't necessarily want to spend hundreds of dollars for software right now as I don't have the money.

Is there also a way I could set up a membership site that my customers could log-in and obtain leads for their location only?

I was thinking of charging customers a $300 annual membership fee and somewhere around $30 per lead. The customer will in turn make several thousand dollars off of every lead they convert.

Final question, is there a resource that you'd recommend that talks about this? I don't know the basics of setting it up or what the accepted way of doing business with offline leads is.

Thanks in advance for your help.