Open Cities and OCS Patches for JK Skyrim and Dawn of Skyrim

[Fractalbase]

I thought I've read everything, but it is not clear to me.

I have JKs Skyrim and Dawn of Skyrim.

I'm adding Open Cities Skyrim to my load order.

Do I just need the combined "JK - DoS - OCS Patch.esp" patch?

Or do I also need the individual patches "JKs Skyrim_Open Cities_Patch.esp" and "Dawn of Skyrim Director's Cut - OCS Patch.esp"?