I feel your pain, nearest tuner I would trust is 6 hours from me. And I didn't wanna drive that far so just went with VMP whom did a great job, but I would rather put it on a dyno for a true dynotune.
+1 with data logging through vmp the car will be dialed in, just to many local tooners. I would prefer to have someone that mainly does work with mustangs specifically the gt500 like vmp does. They will be the best and easier to trouble any issues as well imo.