If you're not hitting any water parks, you may want to do the 85.99 special for USF/IOA instead. It offers unlimited admission equals seven (7) consecutive days of admission, including first day of use, to Universal Studios Florida, Universal's Islands of Adventure, and Universal CityWalk.
http://www.universalorlando.com/tickets.html
Also, Busch has a special BGT/SWO combo for 89.95.
http://www.buschgardens.com/BGT/busch_gardens_visitors.aspx
Make sure you buy them in advance and online to get the best discounts.
Weekdays are usually the best, and get there early. I would do Universal/IOA either on Tues, Wed, or Thursday and hit BGT and Seaworld on the other days.