Solid strategy!

Encourages Larger Investments: By offering higher returns at higher tiers, you incentivize investors to allocate more capital to your projects.Builds Long-Term Relationships: Investors appreciate being rewarded for deeper commitments, which helps foster trust and repeat business.Scales with Your Business: This structure can align with the complexity or scale of your projects, ensuring that you have the resources you need while staying competitive in the market.Key Benefits to InvestorsSecurity: Deals can be secured by tangible assets, such as a deed of trust or promissory note, providing peace of mind.Flexibility: Payments can be structured to suit the investor’s needs—monthly, quarterly, or upon project completion.Attractive Returns: With returns starting at 15%, investors often see better yields than traditional investment vehicles, like stocks or mutual funds.How We’ve Implemented ThisThis structure works particularly well for our large renovation or development projects where multiple investors may be involved.

we invest in value add plays (no major rehabs) 10-40 units.

Out of the four properties , there is one solid tenant, the other is struggling and the last two  properties are not renting.

I am familiar with Firestone park, Goodyear Heights, Fairlawn as pretty solid areas.

Quote from @Matt McNabb: I'm a solid $400k/yr job in NYC and have $250k to begin investing as my first step into building a portfolio, although I don't have time to be a landlord so I have to account for management fees.  

You can get solid cash-flowing single families in the 90-120k price range and duplexes in the 130-180k price range.

You got some solid advice above check with your lender and get in contact with an attorney like @Bob Floss II who can help setup the OA.Assuming there is no pushback from your lender, you should be able to do a quit claim deed to retitle. 

Where specifically in this area you are looking to invest? 

While I could write a whole dissertation as to way, I have no appetite to enter into a kind of discussion in which too often egos become prevalent over helping one another.What I would do if I was in your position is to ask about investing in the US to somebody who actively invests there and ask about investing overseas to somebody who actively invests in Europe and the Caribbean and then draw your own conclusions.