Basically, the most important portion of the wick is right adjacent to the coil itself. Longer, in this case, isn't necessarily better even though that may appear to an advantage. Also, the tank would not seat properly if the wicks were long, they would interfere with the threading and might actually produce leaks from air getting in through a path that is not intended. The biggest key to wicks in a T# or similar device is to have them big enough in diameter to prevent too much liquid from getting inside the coil housing.
Just my opinion, worth what you're paying for it. Your results and mileage may vary. No warranty or guarantee is expressed or implied. Proceed at your own risk.