The best amenities for Airbnb in terms of ROI often depend on your target audience and the location of your property.

Given the location and how the town has been developing it seems like a good investment opportunity for rentals.

What platform is that group located?

Location, location, location.  

For long-term growth, consider newer single-family homes in high-appreciation suburbs or well-located small multi-family properties.

There are more factors than just the community (#beds, level of theming, location to the amenities, style of home (single family, townhome, condo) and others) But I would strongly advise to stay within some of the same communities you mentioned like Storey Lake, Windsor Hills, Championsgate and a few others if cash flow is your goal.

You can use your existing $25k + HML to cover your first flip, and make anywhere between $10k-$25k in the course of 3-6 months (given market, location, etc.)

I have decided on a value that each LLC has before starting the next LLC and some of this depends on the location. 

When choosing a location for your first rental, it’s great that you’re considering factors like crime rate, population growth, employment rate, and price-to-rent ratio—those are all key metrics.

I didn’t see your location in your profile or your post, but assume at least 17% state/federal taxes leaves you with $10k/yr.