The Spirit Realm

Once you get comfortable doing tables, grab some ornate legs and head into the bottom floor of the second castle. You wont have to move around much at all to be in casting range of everything, just remember that wizard and cleric mobs in the castle will tend to break out of VP3, so you will need a regular root up.

Once you get comfortable with the bottom floor, move up to the second floor. You can move out to get stuff on the walkways as well, but you can easily just move between floors and never run out of mobs solo.