If you want to go the OOS multifamily route, it will require a little more work, but you can scale pretty quick when investing in the right markets. 

Scale is equity.

I posted a little earlier that we are expanding our Property Management division and trying to scale it. 

I was in a similar position to you about 8 years ago, I went the apartment building route partially just to stay busy, but also because I got sucked into the “more doors the better, economies of scale, higher cap rate the better the returns” hype.

One thing I like about syndications is my $50K contribution does not carry direct closing costs, and fees, yes the property does, but the scale for me wipes that out.  

I’ve used these methods to help me scale up with the 12 properties I’ve picked up in the last six years.

The $40,000 mentorship might be beneficial for someone who is maxed out and can't figure out how to scale.

Second, when doing flips you'll typically put each property in its own LLC.If you plan to scale rentals, you can have a Management LLC that acts as a PMC collecting rents and paying expenses via its bank accounts.

The best way to be certain of market rents is to work with an experienced local property manager and have them go through your property and give you the market rents and what/if anything you could do to improve the property and rents.Short of that, look at similar rentals to yours that are listed and use a comparative market analysis method to determine market rents.Really recommend working with a local property manager for making your ownership experience as passive as possible, for compliance issues related to renting, and to help you scale to more properties leveraging the property manager's time and experience.To Your Success!

Larger properties can accept smaller amounts on a per room basis, thus providing more value at scale.5) It's a lot of work.