As offensive caster, self-enchanting fighter with utility, as AoE buff Tank or what? For some reason this combination of the classes sounded the most stupid to me, but now I can't stop thinking about making my PC with that multiclass in the next playthrough.
Both classes have poor passives for weapon-based fighting - so maybe evocation wizard + x priest would be the best combo for maximum damaging spell-casting? What's your take on the multi-class?