First off, Jones would manhandle Coture imo-- Vera beat Coture soundly in my opinion and got robbed of a victory. We just saw the hurting Jones put on Vera. He's too fast, has way too good wrestling, and has an ungodly reach. He could stuff all of Cotures takedowns and just stand up and clobber him with jabs and kicks.
Secondly, Jones is not ready for Anderson Silva. Not even close. However, 2 or 3 more wins against top flight talent and he will be ready to at least test the waters.
I am thinking Ryan Bader or Forrest Griffin. Against Bader, it would be a guy with a somewhat similar skill set, who just wont TUF recently and KO'd his teammate Jardines. Against Griffin, it would be a solid step up against a game competitor and former champion with a big name. After beating Griffin, I think he would be ready to really step up to the big leagues. The thing is, who is left at 205? He's not ready for Lyoto or Shogun. He's not fighting Rampage and Rashad is his teammate.