Oh those are nice!! The bigger the better, really. I will pot them up when they're ready, and they'll end up in something around 20" pots if they get that big.
I had thought about the pots cracking when I drill holes in them too. Haven't tried it yet with any of mine, so I'm not sure if drilling would end up in catastrophe or not.

Ok I went to home depot and looked but they don't come with saucers . I did see some nice big ceramic pots that had a built in saucers. You will probably have to go to a pottery warehouse or something if you want more selection. The all in one pots where I believe 16"? some where a nice size.
The southern patio pots looks so nice though they had a bunch at the home depot.