Hei rOk!
Hope maybe this help, its another metode :
Why dont you make a loadfile (scriptload.sqf or somthing.sqf)
In that script you but this two line:
_this call loadFile "\addon\xxx1.sqsf";
_this call loadFile "\addon\xxx2.sqs"
than you put this line in your config.cpp:
class EventHandlers
      {
   fired = "[_this select 0,_this select 1] exec ""\addon\scriptload.sqf""};
      };
Something like that, i'am not so good in that EventHandlers,
but you can make something to call on one script, then the script start 2 other script.
I use that in my script, but its for some FX smoke, so my code looks like this:
class EventHandlers
{
fired = "if ((_this select 4) == ""something here, like weapon, mag, ammo"") then {_this call loadFile ""\addon\smoke.sqf""};";
};
I hope this help