The presumed gear schedule in PHB2
wants the party to have at least !!
solid +3 on attack + ac + saves.
You / y'all are basically playing the
Lords Of Madness ultra tough campaign.
Vow Of Poverty feat for everyone, would
solve only some of the #'s problems.
And/or allow 2 or 3 PHB2 Rebuilds (!).
That said, with Solo posting, the 2 Sorcs
should be able to drop fire and brimstone,
including nearly all of the good spells.
The level 8 guy is oh so close to an Idiot Crusader.
Adept 2 decides the party is fulfilling their bosses'
goals, so tags along with normal NPC wbl devoted
completely to scrolls, no combat help at all, and
a Familiar to deliver emergency Heal checks.