Its been my experience with this technique that tom mics don't really make much sense. Since the overheads are so close to the toms, I have a hard time finding use for tom mics. If I'm going for that close-mic'ed tom sound, I generally back the overheads off somewhat. That way you have better control over the cymbals/toms balance. But I suppose this all depends a great deal on how you have your kit set up - cymbal height, etc. - so YMMV.