You can do geffenia with an SC/GC build.
GC for mobs.
If you're going to use SC, make sure you have quad dracs because you can get SP back easily.
If you're running low on SP, try to find a mini demon or deviruchi to SC because Incu/Succu are hard to hit
Not sure if you can do more than 1m in an hour because I only stayed there for about 20minutes. Got a lot of gold/silver rings though.
