Yes, 2-stage trigger. Don't know what your goals are, but sounds like longer distance, precision. A standard trigger sucks for that. That arena is where a good, light, 2-stage shines.
The Fulton 18.5" stainless, medium weight barrel with a 1:10 twist will do a metric poop-ton better at longer distances than the barrel you listed/linked. You need heavy bullets to go distance. Heavy bullets are long. You need a fast twist to stabilize a longer bullet (the projectile).
The 18.5" sounds like it will better suit your needs, if I have your needs correct. Don't get all wrapped around the axle about barrel length.