if you're talkin about sidezips, I think that the MMM ones are really nice, though i dont know if they're stocked on yoox.
They are, but to be fair they're quite expensive even on yoox. What about more plebe level?
Wait for a pair to show up on gilt. A lot of designers make them.
Tbh you could even get away with black suede Clark's, frye engineer boots, or military surplus if you're looking mega-plebe.
Xhale don't sell your jacket it looks fine, just new. My lamb felt kind of awkward when I got it and then it looked great as I broke it in. The dissatisfaction you feel will fade into love as you make the jacket yours.