im pretty sure all you'd have to do is delete the zombie elements out of it, theres not actually and code you need to write lol..
Not rly
Firstly you need to edit the flag spawn so it won't be buggy, then put the ct's as flag pickers and placers
If you put it on the ground you can only make tunnels which are pain in the ass, then remake the t's models including the knife code, strip restrictions, buy.
Need voting system to vote the flag mover (picker) if we think to keep the flag and carry the flag
I bet 10$ you will have one buggy server.
Is a hell of coding tbh