My main team is actually:
Mewtwo
Suicune
Electirizer
Rhyperior
Steelix
Rayquaza
NICE TEAM SERIVOR
Yeah, I'm trying to think if I need to replace Steelix though.
to me i think your team looks fine.
heres my dragon pokemon for my dragon type gyme
Latias
Latios
Dialga
Dragonite
Salamence
Rayquaza