I spec'ed it all out on paper first. I ended up with 2 orders total: (1) the initial list like yours, (2) the order with the crossbars and M8 t-nuts.
I went with the 1x3 Series 10 as I have a roof rack (Prinsu) on my Tacoma that utilized 1x2 Series 10 so to keep the attachments on the rack...