Tampa is a wonderful airport. But, there are trade-offs. There are no shuttles to WDW. It is an hour's drive. I have done it several times, in reverse (my ds lives in Tampa) and it has always taken me a bit over an hour to get to the airport area...about 75 mins. I drive at about 70 for the most part.
Then, you have to get a rental car, which is going to add to your travel costs.
So....you need to weigh your options....if you don't mind the extra time to get to WDW and you don't mind renting a car, and it makes sense money wise, then go for it.