Decent team, nice. However I don't know if having just 1 Sunny Day user is a good idea or not. Plus I'd run Fire Blast/Flamethrower > Eruption for more overall power and since you won't always guarantee Trick Room up before Camerupt starts spamming Eruption.
But Eruption is a spread move, so with Helping Hand and Sunny Day up, it's pretty beast. Even though it depends on HP.
Who else would have sunny day though?
And, no Ponymon, I haven't. But lets not forget my 24 and a half hour coach journey tomorrow XD