Getting tickets in advance for either or both the Accademia and Uffizi is crucial during your time in Florence. Assuming you want to see them on separate days, you might schedule them around these other possibilities: 1) the domed Duomo (Cathedral), which is the focus of the historical district of Florence - the inside isn't special, but the front, with it's three shades of marble, is; 2) Pitti Palace and Boboli Gardens; and 3) Florence for Foodies, which is a 4-hour tour of food places in downtown Florence. The only potential problem is that it yakes place between 10 and 2 (more or less).
If you'll go to www.tourvideos.com, you can obtain a lot of information about Rome, Florence, and other places in Italy. Despite not having a lot of time, you should be able to identify what you most want to see this trip
Our hotel scheduled all our tours for us, so you might see if where you're staying will make those arrangements for you. If not, people here can assist you.
Foodwise, two of our favorite restaurants are Buca Mario and Le Fonticine. I think they both open for dinner at 7:00, and a reservation should be obtained.
This process can be intimidating, especially at Easter, but make your choices soon and lock down as much as you can. The Frommers gang will help you along the way.