Yes it is stable. But, it's nothing new (right shiki?). its a beat-down deck as well as most of the other dragon type/ dragon theme decks.
So this can be easily defeated by meta decks, and lock-down decks (such as Horus Lockdown, Lightsworn, Twilight etc).
This may work better with cards like King of The Swamp. (or other fusion subs)
Plus the Black Luster Soldier for the Master Of dragon Knight OTK.
I like the Brionac Addition., and REDMD. but I'm not so keen on the Red Wyvern. This is a BEWD themed deck after all.
(5.5/10) = stable, but may be Further Improved.