You may have the greasy look for a bit while your scalp adjusts to the sulfate free shampoo. It's smart to put your hair halfway up though to help hide it!

You could probably deep condition 1-2x/wk since your hair looks a bit dry. Back off it starts to feel mushy and won't hold curl. Have you thought about using a more moisturizing conditioner? Lots of ladies use the GVP conditioning balm (Sally's version of biolage) as their regular rinse out.

Gels: Most gels aren't curl enhancing. Aussie Instant Freeze, Ecostyler Krystal (can make hair feel dry w/ the glycerin though), Biosilk Rock Hard Gelee (more expensive, use a small amount!).
Coarse texture, normal-high porosity, normal elasticity (Komaza Care), very weak waves
cleanser: Redken Fresh Curls Shampoo, CJ Daily Fix

rinse out: GVP Conditioning Balm, CJ Repair Me, CJ Smoothing

jellies/creams: CR Curl Maker, KCCC, UFD Curly Magic
gels: CJ CQ, BRHG