If you buy and hold, time will make you look like a genius.

There are different laws and nuances that you would consider when buying in a different country.

Reason I ask is because after buying the lot, the seller was also a builder and mentioned he could sell me his plans and connect me with his Architect.3.

Buying, These fall into a couple of groups a.  

@Sean Dillon figure out how to buy a 2-4 unit with FHA loan.Then rent at least one of the units long-term for stable cashflow.Try STR in another unit as well as the other bedrooms in the unit you live in.You may even consider living in the basement, attic or worse unit in the building to rent everything else out and max cashflow. 

Not your typically RE agent and I don’t sell I only buy till the day I die, my kids will have that choice if they choose to sell.

That brings up another issue, you can test your subs by where they use grout vs caulk.Depending on your strategy, buy right? 

She said that she knows that house is worth 300-400k (and she's right), but she told me to bring her a price that would work for me, and she would be willing to owner finance if we agreed on a price-she has done owner financing for other buys in past years.

If anything just buy motivating buyer lists or VA until you build your own buyers list.

If you can beat the ROI you're getting on the SFR, then do it.Otherwise, why can't you buy a 2-4 unit with a 3% down FHA loan?