I'm a big proponent of the "strip out first, then FUE" approach, but the challenge is to know when to switch over from strip to FUE. The more strips you take out the higher the risk of stretching the scar, but perhaps you will obtain more lifetime grafts. If you've already done two strips, one being a 4k graft megasession, then Dr. Hasson is probably right in telling you that FUE is the way to go now. Trust your doc!