LED has to be in the deck as Channel has to be. Both cards are very good.

I'd never add a third land. Two is just the right number. All lands are easily fetched out with Land Grants as long as you play two. I'm not sure that this ist still possible with three lands in the deck. And with only two lands you can easily win via Belcher when you only fetched one land / no land at all. Three lands would definitely reduce the win percentage.

There also should be four Belchers in the deck, I think. Belcher.dec often wins through topdecking.