It really depends on where you live. If you don't have a deadline, then I wouldn't worry about it too much. Just make sure you are regularly monitoring the availability at your testing center as the date approaches. Once you start to realize that the testing dates are filling up quickly around the time you wish to take it, you may want to sign up, unless you are fine with waiting another month. However, I have personally noticed when I was taking the DAT that about every week, a spot that was previously filled would open, probably due to someone who was planning to take their test in a week deciding to postpone to a later date. Since you don't have a specific deadline, I wouldn't worry too much. Scheduling your DAT just a week in advance shouldn't be a problem. Good luck and feel free to PM me if you have any questions on how to prepare! 🙂