I'd recommend calling the assessor for the county you're in if you're looking for a broad rate to calculate.

There are DIY tents/domes that can cost $5K on one end of the spectrum and the peak "Glamping" experience on the other end.

spectrum and safeguard are two we use

The generalization that most bad things happen with existing tenants is very broad and likely false.

The numbers give you a range of values for discussion/negotiation purposes, but in reality a deal like this isn't a market rate deal because there isn't a broad "market" for a property like this.

This question might be broad but I am talking specifically between the seller, the lender and the realtors. 

all my work was downtown along with 4 big customs south of Broad in the very best neighborhoods.. 

The current state of the question will get broad answers.

I'm also looking into some groups here in town with broad range of experience and knowledge to see who I can contribute to the group but also benefit as well. 

@Keivan Cross There are hundreds of wholesalers in this market, with varying levels of professionalism and experience (most of the crowd is on the lower end of that spectrum).