I know that the general guidance is that emergency funds aren't to be invested, but given our financial security and the fact that we already have a personal e-fund in a safe, non-volatile location, would it still be crazy/unwise to invest this 15k in an S&P500 index fund in a brokerage? 

File for eviction in court.There are many ways to skin the cat, as discussed in my book.

Loan Security: The property will serve as collateral for the seller-financed loan.

Maybe if you had a good, secure location to store things you could pre-order stuff you think you might need for your next project(s) and stockpile it.

Assuming this is a clean file, with no exceptions required, most Underwriters take anywhere from 48-72 hours to review a loan and get CTC, or provide further conditions. 

-secured card is a smart start.

If you google the Wyoming address it is an attorney's address who specializes in setting these companies up and is a mail forwarding service not a "real" office with staff, owners etc.In the one investment document I read, your investment would be in a construction company with no assets and secured only by a UCC filing.  

So I did a 3-2-1 buydown and secured a 2.875% interest loan for the first year of the loan, and it will gradually go up a percent each year until it hits my rate of 5.875%!

BUT...if you're American and can still get loans in the US (the silver lining of having to still file US income taxes while living abroad), then why not use leverage?   

You've definitely come to the right place to find resources and connections.Here, you'll find several knowledgeable and experienced agents who can help guide you in securing the right property.