It's not about time constraints, it's a case of " get in get it done get out "
The longer something of this magnitude goes on, the greater chance of things going wrong or fucking up from his perspective, he's on a mission to kill five people, he isn't renovating a house. One fuck up from his end could result him being caught on the scene.
He would want to minimize the time and get back to goldhanger, not prolong things by unessecary cycle journeys.