Turning 2 into more?

[Joe Cox]

We currently own 2 long term rental condos in Bradenton, FL free and clear, both occupied  and managed by a PM. Rents are $895 and $995/mo and values are approximately $70,000 and $80,000. We would like to parlay these two units into more, with 2 primary goals: 1. Maximize passive income and 2. Acquire short term rental units in the Sarasota and/or Manatee county areas that we could use and profit from. Now the question: What tactics would you use to achieve those goals starting with two units owned free and clear?