You can apply your subfloor with a coil nailer shooting 2.25" ring shanks. Doesn't take long doing that. Rent/borrow a gun and you can be done in a few hours if it is for a single room, depending on how quick of a carpenter you are. 6" spacing in the field, 4" spacing on the edges. Wear earplugs, as you are inside.

Subfloor goes to the edge. Laminate needs a gap of 1/8" - 1/4". More of a gap than that and you'll have issues with your floor molding covering the gap.