Shade
Monster Junkie
Wizards aren't proficient with morningstars.... Edit: I can see the use of ghost touch, sort of, but it would be weird that it needs to manifest to fight incorporeal critters with a ghost touch weapon!
That would be odd!
It's got 35,000 gp to spend. How about we combine its melee and ranged weapon into one? How about a +1 ghost touch returning dagger? That would total 18,302.
Throw in a headband of intellect +4?