So... I tried it, and yeah, my hairs a bit too short to make it full, but it looks good in the back. The curls look really nice too
Since your hair is longer, it should work...
I used KCKT as my leave-in mixed with KBB and CJSA.
Edit: Here's a pic---sorry about the lighting, but I refuse to let the sun in... it's about 100 degrees outside.