melee/n64 menu expansion help

[KainFan735]

Alright, so basically all i need to know is if i can combine the gct file for this and the one that you can get for ASF1nk's Dark Flaming Blue css that comes with everything in his codes section, because when i tried to combine them in gecko OS it said that it had too many lines.  So is it possible to fix this in any way or am i not able to have different css or sss with the expansion, or is it that im doing something wrong?  Also is there a gct file that comes with everything i need or no?