Cassie,
You still do not say if you have gas or electric......
I am not yet familiar with the codes down there.....it is not too difficult of a job to do, especially if you already have unions above the tank, and you get the same size tank.
Remember that if electric, turn off the breakers to the water tank before draining, and when refilling the new tank, remember to completely fill the new tank before turning on the breakers, or you will short out the top element.
Cassie......fly me down for a day or two and I'd be happy to do it....I am SO SICK of winter!! 84 days until our next florida trip.....
Let us know how you make out.
Frank D.