i have 4 STRs that i use professional PM, 2 of the STRs, after expenses including PM, are not outproducing my LTRs.For optimal ROI in this market requires a value add and quick, at least partial, exit.

Most professionals will recommend a separate LLC for every $1 million in assets but I don't think that's necessary.

It could be worth transitioning to a midterm rental if there's demand for that type of housing in your area, like traveling professionals or remote workers.

Readers should seek professional advice.

Since you're interested in MTRs, look for spots near hospitals, universities, or corporate hubs to attract traveling nurses or professionals.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Readers should seek professional advice.

I think this is a great way to connect with other Real Estate professionals. 

Sold with extra lot for value increase Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

if you just buy standard, long term rentals and put them under professional property management, that is certainly viable.