The airlines are on sale. So what are you waiting for? Choose your destination and take advantage of reduced prices on airline seats. It doesn’t matter that you haven’t got your hotel or car booked because once your flights are booked you can take your time and research all your options.
One thing you shouldn’t do because it will drive you potty is keep looking at the flight prices. Be confident in what you booked and look forward to wherever it takes you.
The more seats the airlines sell influences the rates so remember to choose off peak dates and avoid weekends to get the best possible deal. Direct flights are cheaper because you don’t have to pay arrival/departure tax again to transit another airport.
If you are looking at Florida compare rates for Orlando as well as Fort Lauderdale, Miami or Palm Beach and consider the drive up to Orlando. It might work out cheaper. See earlier page about flights
Also see what happens when you select flight and hotel and select hotel for part stay. It can really change the airfare because agencies are offered rates that must be sold with ancillaries, such as hotels, car rental or transfers.
Your ESTA doesn’t need to purchased until at least 48 hours before departure to maximise it’s validity. See earlier post about ESTA
Have fun researching and all the effort you put in right now can save you money in the long run.