My FAK is a little big for one person. But, I generally take boyscouts out, and so I need a bigger kit.
Although I have a sam splint and military tourniquet, I don't carry those. Tourniquet use guidelines have changed due to a war. But I am not trained in the new stuff. I try and carry mostly blood stoppers and tape. I don't need a lot of little bandages if I have a roll of tape and some gauze.
I also don't carry a snake bite kit because they are useless. How to treat snake bite
My irrigation is similar to this guy. irrigation module
Here are some good videos to peruse. Nutnfancy Level 1 First Aid Kit AMP3 IFAK