Don't list as a homemaker until the proposed change to Reg Z is effective sometime next year (google "Card Act" and "Stay-at-home" for a discussion of why homemakers are for a period not able to claim household income except in community property states. A change was proposed in October but is still in the comment period).
As for card bonuses (sorry I am slow) - I will list my cards from the past year and what they were worth to me. I got 90% of my info from flyertalk (the thread linked above), 10% Fatwallet. I made 14 card applications in 2012 (not sustainable) and my average yield was over $500 per card in cash and travel. Blows away my old 2% schwab card that I was happy with for years.
It is a little complicated to administer, but not really. My wallet is primarily Citi Forward for restaurants and Amazon, Amex BCP for Groceries and Gas, and whatever card I am working on minimum spend for (how you earn bonuses).
I keep getting approved for cards, and even a best rate car loan last year (after more than 12 cards), so while my credit no longer flirts with 800, it seems plenty high. That said, my homemaker wife won't let me do 10-15 cards in her name next year if they lift the Reg Z restriction. I think I can talk her into 4. 6 would be better (Citi AAx2, Chase United, Chase Sapphire, Chase Marriott, and some kind of Amex would be my list, I go for highest value points which is usually the airlines).