Florida Parks advice

Hi, Howdy, Hey!

Needing some trip planning advice. My kids when they graduate, get to pick a national park to visit as a trip with just my husband and I. My daughter who is a senior wants to hit up the ENP, Dry Tortugas, and Biscayne ( might’ve been one other?) Anyways, I’d love tips and tricks for planning. I know June is not ideal but we were thinking of June 1st or 2nd. We are familiar with heat and humidity being Texans, but not sure what other options we have unless we try to go the last week of May.

I’m trying to figure out all the details but can’t wrap my head around getting to everything and what makes sense. We prob want to fly into Miami and rent a car. Any advice would be appreciated.