Re: Beulah 10'8" 7 weight Platinum Switch for Michigan and westcoast steelhead
Head choice is easy. Beulah made heads specifically for its rods.
Scandi - Elixir Switch 375 grains
Skagit - Tonic Switch 400 to 425 grains (I would err towards 425 grains if you are going to use T-14 tips)
Running line - Take your pick. Keep the diameter around .024" if you really want the line to fly or a .030" if you want something easy to handle.
Reels - Get a quality reel that is rated 9/10. If you are fishing the icy Michigan region, I would steer away from cork drag reels. The drag plate can ice up making the drag system useless. You could look at a Bauer Rogue 5, Ross CLA 5, Hatch 9 Plus Finatic.