I don't have kids, or type 4 hair, but I do follow the Chocolate Hair Vanilla Care blog. It's written by a Caucasian mama who has adopted an African-American child. Their products and routines over the years are all there, as are styling how to videos and just general lifestyle posts. I've even learned a few things I can apply to my own routine. You might have a look there for anything you can incorporate.
CG since 11/2011
2c /3a F /Mii, low porosity

Summer Products /Routine:
Clarifying: ACV rinses, Suave Professional Men Deep Clean Peppermint
Low Poo: Renpure Luxurious Argan Oil
Co-washes: VO5 Kiwi Lime Squeeze or Strawberries & Cream
RO: VO5 KLS or S&C, Cure Care
LI (if needed): VO5 S&C, VO5 SC, Cure Care
Stylers: FSG, AIF,
Tresemme Flawless Curls Bouncy Curls gel
PT: IAGirl's (link) as needed