A few questions:

1. where is Kristina Frye?

2. Has jane even taken into account harker's description?
(cuz some dont fit the profile)

3. What did Bosco tell jane in the hospital?

4. Is lorelei martins alive?
(because of the bandage theory)

These are just a few of the questions that need to be answered to make a proper speculation about red john..
though red john is one of the seven, not enough clues have been given to be sure of anyone of them..
I am just accusing kirkland because i have to give a name to submit my theory..