You can Wildcharge and Flap for distance to get over the gaps in the middle corners.
The Coiled Altar
Tiger Dash is taken here for orb movement. Accomanpied with evoker's time spiral you can cover a lot of orb timings.
Remove Corruption can be taken here to dispel the random poison put on your raid.
Cooldown timings are pretty fluid. You should use your cooldowns where your guild is struggling. Having cooldowns for all the shields in P3 isn't a bad thing.
Ula'tek
Remove Corruption can be taken here to dispel poison from your tank while your healers are doing eggs.
Tiger Dash isn't bad here with how tough some of the wave line-ups are.
Watch a vod of other boomkins for the wave movement.