Great to hear you guys could be keen on the Ants, we used to step easily from Ants into cherubs once around 15-16yrs of age (depending on how fast you were growing at that stage)
If your kids are in Optis don't make the same mistake that has been made here and keep them in them too long. They should be out of Optis by 12 and have a good 3-4yrs up their sleeves in Ants.
They can start as crews in Ants easily by 10yrs old, and will have a ton more fun and have much more relevant things to learn. And now they have Asymmetric, pull one string to set spinnakers, they can't wait to get out there.
If I can recommend anything I would suggest that you make the spinnaker a bit bigger than what we have here at the moment(even though it was increased over the old symmetrical one), it seems that it's so much easier to manage that it could have been made bigger. The rule here is simply 9m max perimeter, could be 10m.
At the moment Ants have the old front bulkhead up to the foredeck setup, but have always had a false floor cockpit. At this stage we have been fitting spinnaker chutes through the foredeck and out through the bulkhead into the cockpit (John Ilett I sail Moths with made a mould) with a small net sock to contain what spinnaker comes into the cockpit.
Spinnaker pole is made from a used windsurf mast, the base of the mast is the launcher, goes from bulkhead to out the bow and the top of the mast (which should fit inside) becomes the pole.
Hope the Ant association gets back to you soon.