As said above, that is your best bet. The second name change will require you to do it through the website, rather than in-game -- Be aware.
Personally, I beat the name-sniping bots twice when transferring displaynames. The first name I had I freely gave to a friend. The second name I had I gave freely to a guy who requested it. These were some-what highly desired names; four letters, english-dictionary words.. valuable personas.
8 was transferred successfully to the buyer, recently.. for 2.8B I think I heard it was? Dunno'. But, the bots seem to be slacking a bit right now so I wish you the best of luck on your transfer.