With your background (assuming fighters given your total time?), you just need recent professional turbine time of some sort. Any sort is fine. The more the better of course.

Possible fringe benefit of a regional would be showing that you can cheerfully sling gear for a civilian despite having been a senior officer in a past life.

UPS/FDX would prefer international heavy time or fighter time, if they prefer anything. FDX is more into fighter guys.