Not sure if this has already been posted, but;
I thought of this up yesterday when I was transferring my friends druid. He bots so he had 7000gold on a level 62 druid. The limit is 5000gold.
If your character has more gold than the transfer limit allows you to BUY some epic items from the AH (try to get them cheap) or tonnes of primals etc.
This way, once you transfer to the server you have however many thousand gold sitting in items, sell them and your set.
--Could be a good idea to check the prices on the server your x'fering too and do the buy+resell moneymaker.--
I know this is pretty much common sense, but I thought I would chuck it up here just in case it may help somebody :-)
Thanks.