Well, that totally stinks what SP is doing. I am looking forward to getting my 2 G250V's in January. In thinking about this I would also like 2 more...although it seems that is all but impossible now. I have 2 boys (8 & 9) and they are interested in learning diving. When I went diving this past November the DM let me take my 2 boys into the pool with an X Small BCD and they blew bubbles for about 10 minutes each (6 feet of water). They did a great job and are dying to go diving with dad!
I like the idea of the 3 of us all having the same setup (4 total identical regs). The older one will be 10 this fall, so I'll probably get him started with an intro course this summer. The younger one is just 14 months behind him!
Based on the info you stated above, the odds are pretty remote with regards to coming up with 2 more G250V's, but stranger things have happened!