RIMM is currently in a downtrend since end august. However there seems to be good support at the 95 level (october 07, november 07, december 07 and march 08). I would wait on a reversal of the downtrend before buying any calls even if that ment that I would no buy at the absolute bottom.
I guess you have inside info then, since you are so sure that the market will react positively? Also the overall market might be heading south...you never know. There are no sure things or easy money.
Well - good luck for tomorrow's trading! Still I don't know what you base your trading decision on - do YOU?
I wish you luck also. The IV on those calls are pretty high ~82, so I guess you are pretty sure RIMM will make a big move.