The Resonance measures how well your character is attuned to the Matrix, and it limits not only the personna attributes (firewall, response, system and signal) but also the complex forms you use.
So your Matrix Initiative is indeed Intuition + Response (which is the minimum value between Intuition and Resonance) + 1 (because technomancers always operate is hotsim), and this value will exceed the Resonance of almost anyone. Don't forget that, unlike hackers, technomancers may run as many complex forms as they like without affecting their Response.
And for the free Biofeedback Complex Form, it is, as any other Complex Form, limited by your Resonance (and Charisma).