I have some similar watches to you including the GMTc, Hulk and SDc
I had, but sold on, the 7 day auto from IWC.
I’m smaller than you but was very taken by a white gold DD blue dial with blue strap that I got off TZ. As much as I loved it the 36mm was too dainty and I sold it on.
I appreciate a 36mm on the bracelet will wear a bit differently to the leather version I had. But I think the 40mm DD will suit you better
As to the colour, I’m fair skinned and any yellow or rose gold looks rubbish on me !
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