Ok, I'm all caught up with the thread (mostly). I think that I will play it as being able to drop 0, 1 or 2 bombs for the time being, but not just because the arguments here have convinced me of such.
It simply occured to me that dropping 2 bombs to mess up my opponent's initial plan is a good idea, but keeping the other 2 to mess up his plans down the road is also something cool