If I were going to Pensacola in mid March, I wouldn't plan on getting in the water. The waves at Pensacola can be quite rough, and at that time of the year, the water will be cold.
There are almost 40 miles of wide beaches around Pensacola, plus many bayside parks you can detect in without getting beat up in the cold water.
If you just detected the beaches in front of the Day's Inn going west toward the pier, it could take a week to cover it well.
If it were me, I'd detect in front of the Days Inn, then the public beach.
Then I'd head back toward the bridge, and detect the picnic area before you get over the bridge. A lot of people swim here to avoid the crowds and high surf at the main public beach.
Regarding wet suits . . .
A wet suit will allow a thin layer of water to get in between the suit and your skin, and your body will keep the water fairly warm.
I've been out when the water temp was in the high 40's and the air temp was in the mid 40's, and the wet suit kept me warm.
I did discover that wearing thin nylon pants over the wetsuit kept the crashing waves from forcing water into the suit and sand into the booties.
When it comes to wet suit thickness - a 3mm suit will keep you warm, and will allow movement.
I have a NeoSport Xspan farmer john, which stretches to fit your body. The xspan suit allows freedom of movement, yet fits tight enough to keep you warm.
A 3mm farmer john Neosport xspan will run about $120
Bill