Hi Mike,
I've put it down for April. Mainly as it cooincides with School holidays and pulling the kids out for 1 day on Friday (last day of term) is generally not a big deal.
The other fact is that many parents have kids doing extra-curricula activities such as sports, hobbies, tutoring etc which are pre-paid in advance and generally not privvy to credit. Generally these are concluded at the end of school term and start of school holidays.
I would do March if it was the majority vote, but April is my preference.
John's certainly made some valid points in trying to entice families and school holiday fits in quite nicely.
Good luck mate in deciding!
Norm