The voucher holder is happy (very limited inventory) and as the landlord I can get a higher rent compared to the private market.

If that country is part of the Hague Convention, a local official can handle the signing and attach an Apostille authenticating the document(s).

what you're proposing, while possible, is incredibly difficult and highly risky, and i don't know how you would do it completely remotely with no plans to visit or set up a team.i think i've said this in other posts, but there is tremendous demand for inventory right now among both retail buyers and investors. 

there is tremendous demand for inventory by both investors and retail buyers which is making it tough for the casual investor to succeed.it's great that you're thinking about getting your financing in order. 

Inventory still remains perpetually low.

My plan is to use a low down payment conventional loan, and with the factors you mentioned, it’ll likely be tough to find a property that breaks even.

The only inventory is new construction.

There is so much that goes in a business, rental rates, rental tax, inventory,  job costing, payroll, business analytic reports etc, QiuickBooks does handle what I have mentioned here. 

Conventional mortgage with 20% down How did you add value to the deal?

My advice is to take inventory of what you own and understand why you believe the need to resort to section 8.