Here is how I finished a mudroom a few years ago. Most everything is painted MDF, edged in hardwood so as to deal with abuse. The seat has a flip up top to access some storage below. The west wall has a lower rail of pegs for access by the height-impaired.
Pretty layout - especially like the broad curves.
Draw it in CAD, plot it full scale, use 3M 77 spray adhesive to stick it to the stock, then use the jigsaw or bandsaw. But you know all that.
To ensure your edges are faired and square for tacking on the edging, one of these comes in handy.