Have you considered Turn Key properties? 

After a year or two we intend to buy a larger property in the same area and partner with some friends on it but I do believe a boots on the ground person employed only by you is KEY to executing anything if you are not in the country yourself.

And Stay consistent, wholesaling takes time, but the more deals you look at, the better you get.As a fellow wholesaler working to build strong relationships and find good deals, I can tell you that being honest, doing your research, and staying patient is the key.

Meeting critical dates is the key to nailing a successful closing.

Many hosts have faced similar issues, so persistence is key.

As Peter and Jonathan mentioned relying on similar comps and/or local agent knowledge is the key here.

Each BR even has its own mailbox and key. 

Vitaliy, gave you solid advice and did a good job of explaining some of the key issues.

Clear communication on expectations is key—I'd definitely push them to split that $250 cost at the very least! 

Seems 98% of them just want to take a picture holding a big key sign and promote their business on social media.