I'm boosting my barracks so I tend to over-commit my goblins. You can easily get by with less goblins. Also, important tip, don't go past 40%. It's not so much the size of the loot per raid as it is the number of raids you can do per hour.
I carry a few giants and WB's if the core looks easy to get to.
http://i.imgur.com/XQg2fW4.jpg
http://i.imgur.com/lTKK2y5.jpg

