I see 3-5 as a fad.Fractional ownership - way to much overhead for these to be profitable. think "timeshare".STR in non traditional markets - running a STR is a business and real estate, boils down to location location location - who would want to go to a conference and stay in a STR vs. the hotel where the conference is at, most businesses pay for this I do not see why.Mixed use with green - this has been going on for years- it will continue but it is also more expensive to build - which means higher costs to use.Not trying to be debbie downer, I have seen these attempted to be done in the past and they really have not been successful.I do really like the BTR model though as I continue to see that as a very good option in the future. 

Perhaps if your partner was a general contractor or handyman type there may be some merit there to reduce costs / increase profitability.If your partner enjoys deal sourcing, a better move might be for him to become an agent - so he could legally collect commissions from finding deals and managing properties for multiple people. 

In light of this, I have been exploring the possibility of pursuing creative finance options, specifically seller finance deals, as a potential means to achieve my goals.

Happy to help you with either option, send me a DM.

That will be an important piece to this depending on how you plan to source your capital.

Quote from @Jimmy Chao: I am weighing some options to help my younger brother buying his first primary with a fixer.

Many opt for other investing methods in their SDIRA like private lending, crypto, private equity...anything except collectibles and life insurance.Note that a Solo 401k is exempt from UBIT on leveraged real estate so if you have self employment activity and no full time employees save for you and your spouse you should consider the Solo K as an option. 

Some/many lenders don't like a 2nd mortgage behind their first (like the skin in the game), however there are both bridge or permanent financing options out there allowing you to leverage anywhere from 90% CLTV - 100% CLTV, but don't expect good terms...

Hi @Nicholas L.We are sourcing our deals through a combination of resources.

However, there are better options than $180 a month and $1000 for a WP site.