Hey Lukeocyte,
I found another solution which is much better then the first one. I just opened the original init function in the function viewer for combat patrol and copied it to the init.sqf of my mission (later on it could be integrated into a seperate function, used the init for testing). After that I found the part where the units are teleported and commented it out (starts at line 785). so the starting position will be the one you want to. With this function you also can disable the CP module as it does the same.
EDIT: Still gives an error regarding an undefined variable (_this), but its working
init.sqf:
http://www31.zippyshare.com/v/4ZPWfhsK/file.html
Also thank you for sharing the progress at the official combat patrol post. It's nice to read that someone responded and got a solution too (maybe a better one as mine :) ). I will try it later with a friend of mine (SP&MP).