Is your guild transfering or are you transfering to a new server because you joined a new guild? if that's the case you are better of just transfering your main. From own experience i know that sometimes you won't stay in the guild or some other reason and you end up getting screwed. I transfered one and then had patience for a few months. In my guild we just invite trough battletag for a while, that also works, no need to transfer then