We are actually in need of a Boomkin, since the one we have is somewhat unreliable at times. We are heavy on ranged but if we are a good fit for you, I’m willing to take your boomkin 
So we are EDT timezone guild, so I’m not sure if 8:30pm EDT start time is a bit too earler? We reaid Tues & Thurs 8:30 pm to 11pm EDT. Currently 7/9H working on Blockade. We are AOTC/Heroic Raiding guild only though, so I’m not sure if that’s what you are looking for.
Either way I have added you to Bnet
Our forum post is here if you wanna read about us: https://us.forums.blizzard.com/en/wow/t/twisted-reflection-heroic-guild-lfm