Better, IMHO, to go with whoever's doing better in each particular state. If 100 delegates don't go to McCain, it doesn't matter whether they all go to one candidate, or all to different candidates. I would guess that in Ron Paul's home state he might do better than Huckabee, and there may be some other such states as well.
We would have to settle on one candidate to get the nomination. Whoever has the most delegates, except for McCain, should be the one we start with.....or set up the vote on FR and go with the winner. I like Fred, but if he has endorsed McCain, then he could not be one of the candidates.
I posted earlier that I thought we should coalesce behind Huckabee as he was the only candidate left that had won states other than McCain. However, your strategy might work just as well. Which ever will cause McCain to come in second or lower would work for me.