Don't worry about warmth too much with boots these days, just get it properly fitted, loose / extra socks is bad news. Heres my sample suggestion for you:
158 NS SL or Heritage (if you just want to spend the extra $$ on tech and carBONERium that you probably don't need - hell I would lol)
K2 Company IPO, Flux SF45
32 TM-Two or even Prime if you want a stiffer boot. FWIW I wear 9.5-10 in all my street shoes but wear 9 comfortably in my 32s. They may not be the right shape for your foot, every brand is a little different. Aftermarket insoles like Remind kick ass and make a huge difference, and custom orthos are even better.
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