Hum, all the Torterra topics are old. o.-
Like I said a long time ago, I tend to prefer the Choice Bander. Generally, you don't last long with a 4x Ice weakness and 56 base speed, so what I would probably do is make a really defensive Choice Bander - it's able to take CBtar hits and respond with STAB EQ, STAB Wood Hammer, or Stone Edge.
You could also try a subseeder, but I would rather use Sceptile or something for this.