Artificers aren't really handy at the lower levels unless its a full campaign, but in most modules they see very little use. Frankly it wouldn't be worth splitting the xp and gold over having one in this campaign I don't believe. I think we still need players though, currently we have a Cleric and a Wizard so some kind of Fighter, Ranger, Barbarian, ect frontliner and then some kind of striker rogue would probably round out the party quite well.