You really have to be an expert and outshine the competition here.

Even though your market might prove expensive, I would exhaust all options before ruling it out.Truth is, you have a unique competitive advantage in your market.  

Look at DSCR loans for more competitive terms.

How do SFHs fare in competition with these rentals as supply increases?

I've seen banks be very competitive with blanket loans that cover multiple properties and/or multi-family properties, e.g. 5+ units.Mortgage Brokers (obviously I'm biased) - Brokers have the ability to work with all of the above and can get you to the best lender for your scenario right away instead of having you waste your time with the wrong type of lender.

I would closely monitor your competitions pricing to see what is working for them.Vrbo has built in tools to monitor when people are searching for specific dates.

It's free to sign up for an account and the savings account has a very competitive interest rate.

You can also personalize and theme larger homes better and seperate from the competition a bit. 3.

I am in a very competitive market here in the Tampa Florida area (Clearwater, Saint Petersburg and beach areas). 

You’re absolutely right—speed is such a critical factor in securing deals, especially in a competitive market.