Only 100k for all your work barely sounds worth it, with all respect. 

I do want to add that even if you do hit the average stay of 7 days or less for your ADU, you are still going to need to materially participate in the STR to claim the nonpassive loss treatment.

It allows you to actively participate in real estate and potentially use depreciation to offset active income, which could be a major advantage post-sale.When it comes to markets, you’ll want to look for areas with strong population and job growth, landlord-friendly laws, and housing demand that outpaces supply.

Sounds like you’ve already got a solid foundation with multifamily and LTRs, and STRs can definitely open new doors (especially with the tax angle, if you qualify as a material participant).I’m in the lending space and have worked with a few folks transitioning from W2 to full-time real estate.

Becoming an active participant in a short term rental really wouldn't require any significant changes in lifestyle, I'm doing it right now without the use of a property manager which would alleviate even more of any hassle. 

This would be done just to simplify operations, as currently the funds all have to be kept separate which means my employees have to use different credit cards etc for the personal properties, and they often mix them up which creates a huge headache.Concern there would be for material participation, as it might make the properties look passively managed to the IRS since they're being run through a management company (even though the management company is me).

But even when I move out, I will barely cash flow after expenses, and i'm so okay with that.

Basically pitched as if you don't participate, you'll be diluted. 

I participated in 3 syndication deals total investment around $250K.

Market participants attributed the gains to technical positioning and broader risk sentiment, as equities hovered near all-time highs and mortgage-backed securities (MBS) traded in line with Treasuries.