I take 8E on my open laced 65 lasted shoes and 8.5E on 65 lasted balmorals. I'm normally an 8.5D in every other AE last. YMMV, but the rain last in 7.5uK fits me well.
Congratulations on your coming purchase. You couldn't find a better retailer than Skoaktiebolaget for your first Carmina purchase. Drop them an email for more specific sizing questions.
Appreciate the detailed response