So we sat through a 40 minute power point re.

I do not know any realtor that would sell this property for 90k over the true value Also 12k for two furnaces is 8KISH to high.

High energy in your post, but tread carefully.

At a very high level a property has a “tax basis”, once you exceed that basis you are subject to taxes, whether that happens when sold and paid in full or paid over timeThe loan provided by seller financing is like any type of loan where the interest is taxed at ordinary income rates.

Considering the high interest rate, the projects and COC return seems too good to be true.

Alternatively you can grant someone "power of attorney" and they can sign for you in the US. 

They were fairly highly rated, and performed well on my extensive screening interview (we went over an hour).

Consulting a real estate attorney is highly recommended, especially for complex transactions or if the standard forms need modifications.

MOXIE collects the rent and distributes the owner's payments, not me.

Even with no power to it.