Good start on a short term kit! I would consider this a Get Home Bag, for what its worth. A few questions for ya.
Why 9x18 AND 9x19 ammo? For personal defense, either the mak or a 9x19 would be more than sufficient, do you carry both calibers daily? If not, I would say pick one or the other, and/or ditch the spare ammo on one of them and plan on it being the back up, last resort weapon. (for my GHB I pack 2 spare mags for my Glock, plus 25 spare rounds)
Also, and especially with cold weather coming, I would look at beefing up your shelter and coldgear setup. 2 or 3 ways of reliably making fire, some kind of space blanket or better, maybe even a tarp or small tent? Anything to give you at least a few hours of sleep, regardless of weather.
What do you have for water containers? Even for my ghb, I use a stainless 1L bottle, plus a 1L platypus water bag. Water purification tabs are great, but they can fail. (trust me on that, they lose effectiveness over time, and eventually become nothing more than a way to color your water) Get some way to have multiple paths to safe water.
Also, good job on the plastic bags. I usually carry 2 or 3 on every outing I do, and I wind up using them 75% of the time. More valuable than tinfoil...