There are a few options(1)You can get connected with the larger wholesaler firms in the area (2) go through PCPAO site and skiptrace the buyers of similar properties as yours, (3) hunt down the agents involved in the sale of properties similar to yours or go to local REI meetings and pitch it to the investors there. 

you have to learn land entitlement. we identified a site today for hotel development that was an 18000 sq ft lot.

Is there any good resource with links to the relevant sites in particular states/counties?

If you determine that the numbers look good, make sure to check other sites to see if the comparable property is on multiple sites that may add to the numbers.  

I'm on a call now and they same decent and honest, but some reviews on here and other sites are a bit concerning.

I also handle any inspections needed before the opening of a site.

10 years ago my property was 90% VRBO, 10% Airbnbsame property 10 years in using both,now it's 90% Airbnb, 10% VRBOsame property, same pictures on both sites, etc.

Toxic waste site on Super Fund List  6.

The site has changed tremendously. 

Also, without even looking at the plans a 7 unit building will likely have flawed floor plans and/ or an inefficient layout unless its an irregular site.