The creative side of STRs is definitely a fun challenge, especially when you can make it a reflection of your own vision.

I would also suggest going the section 8 route on a few of the units in what I would consider more challenging neighborhoods.On maintenance bids being high, negotiate everything.

Any suggestions I should consider before engaging them?

The 70% rule is a solid guideline, but in competitive and higher-priced markets like South Florida, sticking rigidly to it can be challenging.

Challenges?

The way to find it starts with testing and challenging yourself and your system.  100% during hot time is one thing.

One of the biggest challenges is keeping the bathroom as carefree as possible.

Selling a property that requires significant work can indeed be challenging, but there are several avenues you might consider exploring:Local Real Estate Agents: A local agent with experience in selling fixer-upper properties or historical homes in your area could provide valuable insights.

I especially believe in this challenging RE environment that some realistic analysis is beneficial.  

The book is useful for understanding how to structure deals, assess risks, and think like a lender, rather than just an investor.Pair this with engaging in forums like this one and attending local meetups to put what you learn into practice.