in X4, 5th acct isn't TBC yet (I tried the 10 day trial to see if that will let me opt in, but it didn't) I went ahead and ordered another copy of TBC (actually another battlechest, $10 more in case I go for a 6th acct some day....) I will probably single/dual box, if I can. I might even 5box if i get 5 accounts, but I wouldn't do anything too serious, because as a beta, im sure they reset things a lot.