I had shoulder length hair and just recently cut almost all of my permed hair. There's about 10% permed hair left and the reason why I won't cut it right now is because it is close to my crown and of varying lengths. If I cut it, I don't think it would jive with the rest of my hair. I started with my big chop last week (6 inches), yesteray (1-3 inches) and I chopped some more today (1-3 inches). I thought I could deal with the two textures, but then tangling became a major issue. I also didn't want the damaged condition of my permed hair to ruin my healthy hair. If u can do it then go for it. I am soo happy that I did. I am loving my curls right now. I am completely comfortable with short hair as I've had it before and I'm not really good with braids and maintaining them. And as for TWA, they can look so sporty and feminine and sexy! There are many options out there. U just have to find what's best for u and how much time u are willing to put into mainenance.
Good luck!!