A boot that fits your foot's anatomy, and that has a flex that your body relates to how you ski, is required if you want good control over your skis. The person choosing that boot for your feet should be a seasoned bootfitter who wants to serve you well. Keeping your feet warm should not be a factor in choosing a boot since there are several good after-market ways to get heat inside any boot.
In that link, K-2 says about this boot:
a mid-flexing (100) high volume boot
All Mountain, Comfort, Heated
Walk Mode
BOOT WIDTH: 103mm"
@zz28zz, are your feet shaped so that you need a wide, high volume boot? A bootfitter will measure your feet to find out. Are you sure you want 100 flex in your boots, given how you ski? This is a choice people here can help you make.
Will you be choosing a boot manufactured for "comfort" in the fit rather than performance? Many people do. Many on this forum don't.
If you choose performance rather than comfort, you'll need a snug-fitting boot whose shell matches your foot's anatomy. Adjustments to the shell (no charge for most) can be made to keep your feet both comfortable in that boot. Electric boot heaters can be added to the footbed (extra charge). The bootfitter will do the adjustments in the shell for weirdnesses in the shape of your foot, and will help you choose what aftermarket heaters will work best to keep your feet warm.
Recreational skiers who choose with "comfort" first in mind usually do not go through this process. They sometimes buy off the internet or in big box stores where shop employees are the only help, not bootfitters. The marketing stuff they have read is fresh in their heads, so they are making their choice based on the boot's characteristics described online or in ski magazines. They do not choose a boot because of the match between their foot's anatomy and the boot's shell shape.
All that said, your foot may be the perfect match for these heated boots.