Official comment
Unfortunately the countdown is only for memory points (although we have had requests for it to count down to hot cues, that's not currently available). You can change the memory point countdown to be either beats or bars, via the preferences.
You can easily jump back 8 bars from a drop by switching to the Beat Jump mode and skipping back 32 beats (8 bars x 4 beats = 32 beats).
You'll want to do this in PERFORMANCE mode as EXPORT mode is primarily for organizing tracks and exporting them to USB devices for use with CDJ players.