Would look at the track record and experience of the purchaser for this type of business along with liquidity, net worth, and current debt obligations with expansion plans.

The property was sold to the investor/rehabber since I have been tracking it several months ago.

Do they issue 1099 to you or you track your income and file tax return?

GC's usually charge between 10-20% more for overhead, project management etc depending on how challenging the project is and how hard you negotiate.

(Every birddog that works for us has a separate number so we can track the leads/deals and pay them accordingly)Thoughts?

Your on the right track having gone and toured the city for yourself before jumping in.

Have you run the numbers to see what your overhead would look like and what you can rent the property for to determine cash flow?  

This would be a minimum if you want your spreadsheet to match your experience.We tracked our clients for some years on over a hundred rentals and generally they achieved 78% of what their spreadsheets said they should.   

Many of the newer exemptions also suffer from unneeded accounting overhead and complexity.  

CallRail to track calls and which list they come from.