You can use ISBoxer on multiple PCs and have toons on your second PC assist ones on your main PC. There are posts on this site on how to do it but it might benefit you to visit the Innerspace IRC http://www.lavishsoft.com/chat/isboxer.php Someone there is usually able to point me in the right direction of the posts I struggle to find.

There is also a post about how you can get full T9 in 12 days after 3.3 drops. I would say that is a decent way to upgrade through PvE.