Yes, I agree with Caligula. The mod is much harder than Lana's mod.
You definitely do need a full party and also two RPCs as well. Smaller parties will suffer and as for a solo character, don't bother. Admittedly I haven't tried a solo but can't see how one could survive, even with the allies yoy know have.
But apart from that, it's still very enjoyable.
Here's a link to a topic on the VN Boards where, amomgst others, Deathstalker suggests the best characters for his mod.
http://vnboards.ign.com/Wizardry_8_S...10/85796950/?6