What happens if there is another COVID like event and STR use is banned for most of the year? 

There will always be demand in the market (it's not like some covid markets that could disappear as vacation destinations almost entirely over the next decade), and the regulation risk is as near to zero as you can get in this industry so long as you buy in the approved tourist zones (again, compared to some smaller/less mature markets where they could outlaw STRs tomorrow).For short period cash flow there are better options. 

New construction is a fraction of what it was pre-covid even. 

I noticed I had several with Chase, unfortunately they discontinued their HELOC offerings since COVID...

I am in a similar situation (although I've changed my goals slightly and I make significantly less than you do).Your strategy is likely going to evolve as you grow into it, so the first step is about getting your feet wet.You aren't investing as much as you are building a business. 

Hi Tyler, During Covid is transitioned all my short terms to medium term and they were in two states.

This is why many short-term rentals in Las Vegas were sold during the COVID-19 pandemic.

After the 08 crash, I started buying rentals and built a portfolio of 80+ sfh's - all three bedroom homes in areas with good schools.My mistake was selling a bunch during covid.

Some rents have gone up as much as 22% this year and 40-50% or more since Covid. 

I've had very few vacancies over the last few years since Covid, tenants have been staying put where they are located.