Yesterday was my first day wearing my new Hiro black cap-toe oxfords. Hoping the break-in period will loosen them up a bit! Immediately I can tell they are smaller across the toes than the Olfe. I sized the same as my Olfe cap-toes (10.5UK). My feet were crying by the end of the work day, train ride, and walk home! Worst case scenario, me and Hiro will have a love-hate relationship.
Personally, I go 11.5D on the Singleton. I have both the dark chocolate suede and brown calf. Each pair was a bit snug in the instep at first but broke in nicely over time. I also wear 11.5D on the 5-65. I have a relatively small lacing gap on my 5 last Strands. The 5 last is very similar in width to the 9-79 throughout, but a bit longer in the same size. YMMV. Hope this is helpful.
Since you're open to the will of the body, , I'd personally prefer no braided lace at all. I really do think the shoe will be great as pictured (but of course not identical because we're talking different makers, last, etc).However, the braid is not a deal-breaker for me; I just place my vote for no tassels.