Woah, i don't know what battle force you're getting but the standard one is 16 boyz, 1 trukk, 5 bikes, 1 buggy.
You must first decide what your army will look like. This battle force is really good for speed freaks. For normal foot sloggers, it is an ok deal, mostly because of the bikes where they are too fragile for small point games.
Again it depends on your army.