Are there if any sites specifically filtering seller finance deals? 

Found this site and ready to explore.

Maximize cashflow via STR (hoping to get 7-8% net)Second question, with these goals which would be the most attractive area for such an investment: Miami Beach, Miami Downtown, Brickell, Midtown.Thinking of getting 2 condos (1 bd or 1bd + den) ~$750-1M eachPayment structured are usually 30-40% until project is completeThank you find undervalued land and entitle it and capture the delta of underpriced land. there's a lot of sites that are underentitled.

@Doug Spence check out https://symbium.com/ it's a good site that let's you see your lot's feasibility and connects you with ADU contractors.  

On the site I search on the new listings are first so it only takes me about 7 minutes to cruise through about 12 neighborhoods.

We use Booking.com (in addition to Airbnb/VRBO and 12 other sites). 

Our purchase market is very strong so you'll be able to grow capital relatively quickly partnering with someone who's actively developing and rehabbing sites.

Often, management is on site and many condos are kept in the rental pool.

I leave and head the office, dig through some sites and run off to lunch. 

I also just completed the new on site laundry facility and opened it up.