A lot of people do a coconut oil pre-poo. I've been soaking my hair overnight in coconut oil before I low poo in the morning. I like it, especially since the dew points are getting really low here.

Tresemme Natural I find to be light, and it's great at detangling. A trim would definitely help you out. CJ Repair Me is also excellent if you haven't tried that out already.

I too have problem with polyquats and took me 2 sulfate washes to get it out. That stuff is gross.
2c-3a - coarse - normal-high porosity - high density - growing out to donate

NP/LP: KMF Whenever Cond./ YTCucs, Giovanni TTTT
RO/LI: Sevi Pumpkin Seed DC / CJ Argan & Olive Oil, KCKT, YTBbs
DT: Coconut Oil + scalp massage
OIL/STYLER: SM Elixir / KCCC, SS CEJ
COLOR: henna, amla & indigo