Don't go for 50/50...you ARE the primary caregiver. Get it on paper! Why be the primary care giver and let her reap the financial benefits of it?

Me45 (D11 from 1st marriage)
W43 (D20 & D16 from 1st marriage)
M4
Bomb 6/16/09 W wants D
W moved out 8/29/09
I sent her D paperwork 9/25/09...I'm done