One thing you might want to think about is that when you get commissioned, you will likely get stashed at your unit for at least several weeks before heading down. You're entitled to 10 days TAD for house hunting upon reciept of PCS orders, so you may be able to go down then.
That said, the South in spring > the South in summer; it's not so hot and buggy. But if you want to go, go. Check out the museum, the beach, the Flora-bama, etc. Panama City Beach and Destin are relatively close if you get bored in P-cola. There's some amount of spillover into P-beach from the spring break crowd but not much.