Use enigma and get 65 FC. This is the best choice. Even if you don't do the "ghost" build or any other similar build.
The max doesn't transfer to kicks and the ED is a minimal help.
Bramble gives decent poison damage but you are so slow you might as well paint a big bull's eye on your back. Further, you are mostly unable to catch anyone with good mobility except through luck.
You CAN use both enigma and bramble, but there is no one you can kill with bramble that you can't kill with enigma. And the enigma can save you a huge amount of life by building in the strength.