Finishing wood trim

We are in the process of building a house and I have been coerced into finishing the trim (baseboards, window and door trim, ...).
I plan to stain the white pine boards (1x4's and 1x6,s mainly)and then finishing with Minwax polyurethane to match or coordinate the 4-6x6x14 and 6-6x12x16 white pine beams installed during framing.
I finished the beams with one coat of stain (golden oak) and then three coats of brush on satin finish polyurethane (sanding after each of the first two coats).
I plan on staining the trim with a pad (after sanding the planer and other mill marks out) and see no problem there.
However, I would like to spray the polyurethane on the trim in the interest of speed and convenience (there is a lot of lineal feet of trim to finish). My initial test with Minwax (stain and then three coats of satin polyurethane spray)did not produce the same luster as the brush on poly. I plan to try both semi-gloss and gloss spray on a test piece to see if I can get closer to the appearance of the installed beams.
Any suggestions on upgrading the finishing task???

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