Yeah, no Divine Power puts you 2 points behind on BAB. Although, unless you have your feats planned out for a melee build, you could mix DMM and a melee build. I'm not sure how many spells 3rd level and lower are good for persisting, but Quicken Spell is also quite nice for DMM.
What sorces do you have available? It looks like Complete Divine and Champion are open from your mention of DMM and the various domain devotion feats.