Now I want to sell a handful of LTRs and buy another STR, this time preferably in Florida.

I like these amongst ,many other right nowREXR - (Rexford) they are a niche (sub-specialist) in industrial warehouse/distribution/manufacturing in the southern California only urban or Infil area, they are not international like PLD - prologis, their MOAT is that SO-Cal has geographic limitation to new inventory, so they have rent pricing power that industrial in rest of country doesn't, also 26 million people in so-Cal and the 2 busiest Ports in country, their earning/revenue projections next few years are best in class, and they are cheaper on price to book than PLD or others, I own some and will buy a lot more in upcoming Recession, likely in next 6-12 months, when publicly traded equities will likely slide by 20-30% although their assets (physical buildings) are only going up in valueVICI- (casino REIT), used to be part of Cesars palace, then Caesars spun them out in 2018, to do sale leasebacks of their properties to take all that physical capex off the books.

Some people don't like having others around but I've found I really don't mind it if I choose the right person.  

There's plenty of great and smart people on here and in our local area that can offer advice, but I would offer two things:1.  

People want simplicity more than anything.

Also, I am open to thoughts on my strategy to partner with people who are open to equity position, not as a fee based consultant.

Any first hand experiences that can be shared would be greatly appreciated.

We've seen thousands of posts where people are looking to get out of their job and away from people, bosses, and customers and want real estate to be that way out. 

People refinance the loan all the time.

Based on my research so far it seems the most easy to find CRE mortgages are short term (up to 10 years, though amortized 25-30), but I have also seen people repeatedly state that you CAN find longer term CRE loans.