%DR is of little use in PvM when you've already got max block and ES. Straight PDR, however, could be effective in substantial amounts but can be difficult to get while maintaining max resists and decent FCR.
The main point I see in going to not-so-budget gear would be to hit 105% FCR, since what really reduces your run time is getting to Meph faster. There are a number of ways of getting this, probaby the easiest being Wizzy, Vipermagi, Magefist, and a FCR ring. After that you could always switch your helm to Shako and/or switch your shield to Stormshield (%DR) or Gerke's (PDR/MDR).