It really does depend on pacing. Maverick is 2 1/2 minutes with 4450ft (dual launch) of track, Steel Vengeance is the same but with 5740ft (200ft lift), and Millennium Force is 6500ft at 2:20 (310ft lift).
https://rcdb.com/15411.htm
https://rcdb.com/3570.htm
https://rcdb.com/594.htm
We don't know if there'll will be slow down sections for show scenes or not but if there is, that'd be a quick a way to add time on. If it's 3000ft long and meanders around like Space Mountain does, we'd probably hit 2 minutes easily. This is if we launch, go to the top of the building, and slowly work our way down.
Also, Disney could pull a sneaky PR move and say it's one of the longest for ride time and not track length. For all we know, we could get a 1500ft coaster that goes around at 10mph