If I do go the property management route - can i get a limited service option (say in which I find the tenant, collect rent, handle most maitnenance issues) and they primarily are liasoning with my vendors during US business hours and handle any urgent maintenance issues?

My personal and professional experience has been that they do not provide actual replacement costs in their evaluations. 

Payment service? 

This is great in terms of paying off your HELOC but not great for actually securing the refinance loan.

It’s about building an actual business with your own customer base (and not what you lease from OTAs).

The 'ole saying, if you have a great deal, the money will come' is actually real.

Am I going to need a variance or have to rezone this lot to actually build on it? 

https://www.amerilawyer.com/assetprotection/nj_land_trust.ht...https://www.assetprotectionplanners.com/services/  I think they do it anywhere

Most of these properties are going to take me 6-7 years to actually have positive cash flow.

If you aren't willing or able to do it yourself, companies like Equivo can do it for you. https://www.equivo.com/services/enforcement/evicting-squatte...