My sister just drove from Syracuse to Orlando and made it in 20 hours. You could drive two ten hour days and only need one night on the road. Even if you drove 8 am -8 pm allowing for stops for lunch, dinner you should still make it in two days. I know ten hours is alot of driving in one day but I would be more tired driving 7 hours and then killing time before sleeping in hotel just to think about having to do it again before arriving in Orlando.
If flights come down for your travel dates would you fly? How many people beside you are going? I had flights with Delta last year, May for $155 and July for $118.
You could check the KOA website for camping areas but that would mean alot of other stuff to bring, sleeping bags, tent etc to save a few bucks. Have to weigh your options and decide what works for you.
Lori