Make sure to agree on all of the roles, duties, decisions and money then see an attorney to draft all the documents and security instruments for the funds. 

I am looking to secure a stable financial future for my family. 

It's my first toe-dip into house-hacking and I just know that in my prior rental experiences, the Hold Fee wasn't a full month's rent amount, it was a % that then got applied towards the remainder of the Security Deposit.Does everyone else request the full Security Fee amount as the Deposit to Hold?

I’ve been able to secure private loans at 100%.  

If it was you, what securities would you want on your money?

If it gets to closer to the end of the month and you havent sealed the deal then yes, try a promotional offer off the 1st month rent or security deposit.  

@Andrew Carlson I think you are combining two separate things: 1. tax advantaged retirement accounts and 2. investing in publicly traded securities (stocks, bonds, mutual funds, ETFs, etc). 

So the BRRRR strategy really seems like a great way to build a portfolio as well as secure our business with wealth.

I'm looking at purchasing an apartment block (20+ units). is there a broker out there that has worked with foreign investors who can help secure financing?

Individual HELOCs, @Stanley A. or a line of credit secured by the portfolio.