For my skinning knives I usually put a 20 dps (degrees per side) angle on them…
Also, you can go straight from your 600 grit stones to one of your posted strops… Just make sure to lower they angle about 2 dps when going to be the strops since they actually flex and will round your edge if not careful. This will give you a very toothy edge that will really bite in but also still shave your hair on your arm.
You could go through the 1k diamond stones, which is a very nice refined toothy finish, but I don’t think you need to go higher than that based upon your stated uses. Hope this helps!