Del, I spoke with Grant last night and discussed the possible pit falls of having a meet on a certain date of each month.
The tried and tested format which seems to work better is the first Tuesday of every month. This years calendar would have more 11ths on a weekend night (3 friday, 2 sunday, 1 saturday) and I feel a better turnout may happen on a regular Tuesday evening.
Finding a good venue will be tricky, and you will never suit everyone, but good luck.