It's not really a matter of how much TIME you give her... her head will start coming up automatically trying to get to the light. At some point, the bend that you've given it now will be permanent and you can re-use the material you used. What you want to try to do with any LST is open up the lower bud sites so they become large colas in and of themselves.
Your grow is looking really, really good and you've done a nice job on the LST... you should be VERY pleased when you get to harvest! Keep up the good work!