It's only been a few minutes since they came down from the apartment. They only talked to Sandy for a few minutes, and have only been in the break room just long enough to make a couple cups of coffee. They have about another 15-20 minutes before the cab gets there.
Yeah, it's another version of "comic book time", just roll with it.
And no, Doc's not going to add a coffee shop to the paintball store. Part of the reason I added Cara to the cast in the first place was to have a new location- a new setting- for the crew to occasionally hang around at.