So, I am approaching this as a hunter and SAR responder who often is called out for hunters.
Pistol or bear spray needs to be on your person. That way, if your pack is off, you can quickly access your defensive tool of choice.
The upper base layer is cotton, or?
I always recommend a hooded, long-sleeved sun shirt.
It's probably too late, but I would look at lighter boots.
Ammo, if you are going to carry a pistol, leave the extra rifle rounds in your truck. If needed for signaling for help, use your pistol and don't waste rifle rounds, but if you have no pistol, carry 6 more rifle rounds in your bino harness.
Lighters - 1 in your harness.
I added a cut-resistant fish fillet glove to my kill kit, and I have seen many cuts, some minor but some very bad while processing animals.
If the hunt style requires a tripod, then that's okay, but I would drop it. Nowadays, everyone seems to need a tripod to be a successful hunter.
I have seen many phones damaged in cargo pockets after what appeared to be a pretty minor slip.
Headlamps - 2. It's common for people to get turned around in the dark, and it's dangerous to try and travel without some form of usable light and a backup. One in your harness, if possible.
Make sure someone not in the field has access to your Garmin Inreach account; that person can initiate a location ping themselves.
Make sure the "Include Location" is turned on for your Inreach Messages.
Bug spray
Whistle, if possible, in your harness.
Food seems light, but I do not know your hunt plan, style or your current daily caloric intake. But if you know what works for you and are not adding something you have not tried before, you should be ok. Just make sure you have enough calories to compensate for hunting-related activity.