I would personaly prefer 1-2 Tamer using as Tank with Veterinary, Barding (1 need Disco) and Magery. Its very Simple to do Gauntlet with 2 Tamers, when using 1 or 2 Archer,too as Supporter you can do this nonstop:-)
Sampires and Whammys are not bad,too but when it comes to multiple accouting it could be a pain to control 2 or 3 chars in once.i know someone who used a script to control 2 Whammys with Discorance in past. They only kept alive via Crosshealing and Melee damaging. But how it would work on Osi.. who knows..
A Script to full Automate Doom or processes there exist on a few Boards.. butall are crappy buggy or never were finished.