You have to send all the federal application forms to Mississauga. You do not send any Quebec forms to Mississauga. When Mississauga approves the sponsor part of the application (currently about 85 days after they receive it, more or less), they will send you a letter, by email if they have your email information. You have to send a copy of that letter to Quebec with the Quebec forms. You will receive instructions.
Those values only apply to parents, grandparents, sons, daughters, etc. They do not apply to spouses or de facto spouses. Since you are sponsored by your wife, she is exempt from any kind of income requirements to sponsor you.
Edit: It appears that sponsors of dependent children are also exempt from minimum income requirements.