I know there have been delays and issues during government shutdowns but this is a new one for me. 

I found that some people will only share enough information for them to get paid.

He has up to $4mm in cash for an initial investment.

People responded by explaining that residential mortgage lenders are looking for US-based customers, who have their residence, income and assets in the States.How do they view foreign debt?

Often, those advantages are boots on the ground and market knowledge, which are the two things you have/are working on.I think, in general, you will find all those central Illinois areas provide decent cash flow with low appreciation - generally speaking. 

I saw some old negative posts on BP about Blue Gate but nothing within last 2 years and I didn't find info on the others. 

If you are seen to be using this for investments, then you will find it hard to get another FHA loan, making this method difficult to scale, but good when you are getting started.

My questions are:- is it worth investing there in terms of the safety of tenants?

The reason I say this is to lead into the answer from your question. 

Any recommendations for contractors in the Atlanta area that preferably work with out-of-state investors?