just me, but if the FSM lists a torque then I use that torque. the intent is to ensure the manifold doesn't warp and clamping force is *even* across the face to prevent leaks.
about a 3/16 bead on the ends is all that's needed, along with a 1/4 or so "goober" at the ends to seal to the intake gasket. more just ends up in the cam valley. taking a wet finger and putting a nice tuckpoint on the outside after you torque the manifold shows you know what you're doing
I generally don't re-torque an intake because you can disturb the valley seals. I wouldn't sweat it either way.