Howdy Guys. Not a huge gun guy so hoping to get some feedback on my research conclusions. Here is what I am after: Looking to replace my trusty 40 with a 10mm; I live in NW Montana and have known for some time that the 40 really is not a good choice should I need to use it / bears / bigger game. I do a lot of hiking so looking for as small a package as reasonable. I am most comfortable with a semi style and desire the extra rounds. I live pretty remote and have been incredibly sloppy with regard to ensuring I have a firearm around / available, hoping this goes a ways in applying remedy - that is getting a package that I can use for hiking / self defense in an emergency situation.

Here is what I am coming up with:
Glock 20 with a KKM 6.5 barrel (My understanding is the extra barrel length allows for the round to achieve a higher velocity and thus deliver more energy; do I have that right? - actually making the step up to the 10mm meaningful; still easy to clear the holster but much easier to carry than say a G40)

Trigger upgrade to reduce the pull a bit & some low light sights & a small gun light.

Ammo:
Buffalo Bore 200g or Grizzly 180g JHP

Any feedback? Thanks a million!!