The process of buying, getting a loan and settling to closing was extremely smooth.

I've also used traditional loans through regional banks and a few SBA loans. 

I can only imagine that they got a bunch of big time investors and business loans to grow this out.

For context, I will be assuming his VA loan at 5.1% and he will be doing seller financing for the remaining equity and sale price. 

Now my investor network as expanded and the best split I have experienced was 65/35 in my favor but I invested 40% of the cash and created over a million in imputed equity before any investor dollar was raised allowing me to originate a bank loan at 87% LTC.

Possibly using mortgage/home equity loan on one unit we own to buy an extra one.3.

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Did you use a hard money loan for this? 

If they have a good interest rate it might be worth looking to see if you could assume their loan to take advantage of the lower rate.  

If you have a loan, you may wish to look into due-on-transfer clauses.