I have similar feet and wore the trango the last few seasons with a shim, insoles, lacing tricks, etc...and always had some heel slip and cold toes. At Dane's recommendation, I tried the Nepal and they are a dream. Lots of wiggle room in the toes, snug in the heel, and warmer. All right out of the box. I trust my feet way more now and climb much better and more relaxed as a result.