wow long days, 140-150k with a heavy load, you're a stronger rider than I.
option E, glad you didnt take it the wrong way.

interesting, talking of pedals so much, I really do believe that how a shoe fits ones feet makes a big diff. I tried on many diff shoes a few summers ago and having more of a narrow foot, the Specialized mtn shoes , 2 velcroes and a ratchet, fit me better than others I looked at. They were maybe $160 can, there were lots of good shoes in the $100 range, but these fit just so well, I figured over all the years I will use them, the extra money was worth the good fit and arch support that was better than other shoes too. For me, arch support and good fit makes a big big diff in comfort (obviously) but I find my feet are not all achey after a 100km day, and THAT is completely worth it. (plus, I want to be riding for another 30 years or so, so it just makes sense to go with what works best for your particular body parts, whether feet and shoes, bum and saddle, overall good bike fit for arms, wrists, neck etc)