There aren't a TON of multifamily properties outside of major metro areas in Florida. Period. Houses are rather inexpensive here, so there just isn't that much of a need as far as I can tell. Lithia is a pretty nice area. It's getting a little "out there" relative to Tampa, but not terribly so. Brandon is also nice. It really depends on what you're looking to go for. Are you looking for a place for you, or are you looking for a straight rental? What are your needs vs. what are the needs of the tenants you hope to attract? Are you looking for more beachy areas? Urban? Suburbs? Are you looking to make the property an AirBnB, seasonal rental, or year round?
I see from your profile that you're from NJ. I'm a relatively recent transplant from NJ myself (about 2 years now). I'll tell you this now. You're not used to the weather here. It doesn't take much to acclimate yourself here, but there are weather related things you need to think about here that you didn't have to think about in NJ- namely hurricanes/ flooding, and insects. No one tells you this ahead of time. There are a lot of bugs in Florida. Lizards too, but they're cute and not nearly as heavy in the gross out department as "Palmetto Bugs." We know them in NJ as roaches. They're not quite like NY roaches in how they nest- but where you are will have an affect on how much you're going to have to deal with them.
Food for thought. I'm by no means an expert on the area yet, but I've been exactly where you are. If you'd like, hit me up, and I can tell you what I know about the area.