We're heading down on Sunday for a few days, and it's just that time of year where you need to pack a little bit of everything. I can tell you as a Floridian and someone who is very cold in 60 degrees like you, I'm not bringing a bathing suit, lol. I know for sure I don't want to walk around wet unless it's summer.
I'm bringing a couple pairs of jeans, two pairs of capris, one pair of black slacks, one pair of shorts. For my top half, I'll bring a couple t-shirts, a couple long or 3/4 sleeve "light" blouses, a sweatshirt or two, a sweater and I'll have my fleece coat thing in the car. I'll also have a hat and gloves. Anything else I need I guess I'll have to buy down there. I hear it should be rather cold on Sunday night (40s).
I'm two hours north of Orlando, and we're having a cold-to-the-bone cold front right now. It's windy. Yesterday it was wet, windy and overcast. I was in my thermals with a fire in the house all day, and I was still shivering. It should be warming up a good bit by Sunday -- I hope!
Have fun!!!!!!!