If you've already done a monotype on Sapphire, and want to do an Ultimate of that type, you may. You might want to VM Alakazam when you get to the Hoenn part, and tell her that you already completed this part. Or, you could finish Johto, and then the next post could be a large spoiler with all your Hoenn updates and the first update for Sinnoh. Either way.
I'm planning on doing a UMC for each and every type. But, instead of doing it the normal way, I'm doing all the Kantos, then all the Johtos, then all the Hoenns, then all the Sinnohs. Make sense?