Nearly all of my incoming vacation rental investors in Colorado have dual goals -- to have an investment property in Colorado and also to use it for personal use.

You are on the right track!

You only need a place to track tenant information, payment history, maintenance, etc.

The cash flow from the other units may or may not cover your expenses or mortgage, but that's not the end of the world. 2-4 units in FL are expensive right now, but it allows you to get your own place, pay down the principal and start building your track record and portfolio. 

I get my real estate seller leads from the following sources:GQREA, Leads to Listings, Trulia, realtor.comWe also had GQREA develop landing pages in every zip code we cover.I then send all data to GQREA: http://realestateleads.pro/listing-leads to track and schedule..They generate their on leads/referrals and also call the data I send.

Track record, a strong deal, conservative underwriting, realistic returns, good debt terms.

Unless you have a solid net worth or strong track record in this area, it will be tough, but not impossible.

@Garrett Mathis PMC software is mostly focused on tracking leases, tenant payments and then various other building data.

So it will be an education for me to track expenses for this property over the next few years.  

Sometimes I get so busy helping people buy properties I lose track of time. ;-)