With Bard/Beguiler, there's going to be an awful lot of overlap and redundancy in spell and skill selection but little synergy, apart from a shared casting stat and the ability to cast in light armor. Moreover, both classes have poor HD, and bards functions best with a group of adventurers when their music can affect more people.

My vote goes to the fighter/cleric, or maybe something entirely different like a dwarf barbarian/dragonfire adept.