OK, so I initially intended this to be a quick post, but it isn't. I was a medic in the 82D ABN, and have treated a fair amount of people in combat - but of course doesn't mean that I am right, and others are wrong. But, I have done it, in places other than classrooms and hospitals. Here are my thoughts:
+1 to training. A lot of it. Training trumps equipment.
The right guy can make Kerlix, petroleum gauze, and 6" Ace wraps do amazing things, FWIW. This is primarily what I used. This stuff is my bread and butter.
I'd get rid of a lot of that stuff personally. The field dressings would be gone, as well as the 2x2 (use 4x4, or a section of Kerlix folded up for the more minor owies). Cravats are worthless, IME, except as slings. Cling wrap for sealing a chest? If so, gone - get some petrol gauze. If not, what do you use it for? 2"x6 yard gauze would be replaced by Kerlix.
Is your tape 1"? I like at least 2", and I don't recall anyone preferring the 1" stuff. It has its place, but that place isn't for serious trauma.
Not familiar with that Maglight - is it a headlamp? If not, away it goes. You can get good, inexpensive headlamps from Walmart for about $15. Two hands and light are really nice to have when someone is bleeding in front of you.
What kind of splint? Do you know how to use it? Is it a SAM splint, or what? If your goal is to make someone not bleed to death till more qualified folks show up, I'd DX that too.
What kind of tourniquet? IME, the one handed ones suck, at least the ones I've used have. It didn't take long to realize that. Do you know how to use it?
Definitely get some trauma shears.
Have you actually practiced with this stuff? In somewhat realistic conditions? Here's a hint, get someone and practice on them. A lot. On all parts of them, including armpits and groin, and places that would be inconvenient to treat. Then wet them down to somewhat simulate blood. Blood is slippery. Then do it in the dark. Then do something to elevate your heart rate and get yourself excited. Make it suck, and make it difficult. Then make it harder. Then add more patients. You get the idea. If you practice for 20 minutes, and think you're good after that practice session, you're mistaken (no offense).
Is all your stuff wrapped up like it came, or have you done anything to make it easier to open stuff? Don't use your mouth, unless you like blood and other nastiness in your mouth. There is a lot of stuff you can do to set yourself up for success, like bending your tape back on itself to create a tag. Try getting that tape loose from itself when your hands are wet. Sometimes seconds don't really matter, but sometimes they do.
Do you know where all your stuff is within your kit, and what it feels like?
Being prepared is far more than just having stuff available for you to use, IMO.
