Gato,
That sounds like a great way to introduce kids to sailing. When they race there is only one winner. Use the boats to go camping and everyone one is a winner. They should love it and associate those memories with the sport for life.
Great idea.
There is no doubt you could build a simple deep V cat quicker than many other types. Just bear in mind that the deep V is not as good at carrying weight if you are moving camping gear on them.
We had deep V 12 ft Surfcats at our club with spade rudders that did not go down below the keel. The kids could sail them in water they could walk in.
However to make the design work the tramp was on a square tube frame and set well above the deck so it would still sail when the hulls were almost submerged. So if you are going for a deep V just be sure it will carry the weight you want to put on it. As you would know a round bilge hull or chined hull will carry weight better and the shallow draft can be achieved with skegs if C/Bs are out.
Which brings us back to building time. They can take a bit more to build although not that much more because you don't have to put much inside them which always seems to be where most of the time goes.
Good luck sounds like a great project.

Regards,
Phill