You’re good! If you plan on layering with a 22”, then either a 20” will work if you’re going for a tighter look or the 24” which is more of a loose/fitted look👍
The thickness of the chain and the size of your neck will make the length shorter 👌 if you want a longer look then definitely 28” or 30” is best unless you like the fitted look
Honestly, it depends on your build. If you’re a big dude, then 26” will still have that fitted look. If you wanna go more loose, then 28”. If you want a baggy loose look, then 30” 😃