You don't need 3 sonic birds man. Replace 2 of them with Urgent Ritual Art (RECOMMENDED, don't know why it's missing even in useful card list) and absolute ritual, also add some benten for absolute rituals.
senju is needed, but sonic bird is not.
In a fast paced duel, is it countertuitive? I don't think so. Dakini's effect activates in End phase, meaning it's slow. You might need 2 ritual summons in a turn so this CAN be useful. And you don't always have Dakini in your hand (this is why Senju is needed)