Coming to the end of my kitchen cabinet building and installation. I need some advise/experience for locating the undermount sink in relation to the cabinet and its cutout in relation to the countertop edge. (3cm granite or quartz)

The sink flanges are 19" (18" inside measurement). The clips for installing protrude 1-5/8 from the flanges. This adds up to 22-1/4". Face frame cabinet 3/4 plywood back, inside dimension is 22-1/2". Giving 1/8" per side from the clips.

With a 1-1/4" countertop overhang from the face frame and a 1/4" overhang over the sink, the front edge of the countertop will be 5" wide. (With the kitchen wall 3/8" out of plumb, the back edge ends up about 4-1/8" before the back splash).

Does 5" seem too wide for the front edge of the countertop? Is there a standard? Any good options for moving the sink closer to the edge?

Thank You - Troy