I've been doing some thinking, and though I *was* advocating earth/time/fire, I've decided you're right about the current setup.
The main reason to take fire would be for perm control to counter decks like aether, but if you use a pulverizer, that's unneeded. You won't get to use fun immolation decks or anything, but that's really the only minus.
As to the current card list (option 1), I strongly suggest working in basilisk blood. It's a very good control card for decks that don't involve scarabs.
I would also probably go 8x stone dragon, 10x graboid versus 10x stone dragon, 8x graboid.