Artie 2 doesn't grant evasion, so if doing an artie splash I might suggest trying for 19/1 to qualify for Divine Might IV. This would likely require 1 or 2 levelups in cha, but I can attest with this build as written I have divine might running pretty much 24/7 so DM4 would offer real benefit.
EDIT: It's Divine Sacrifice III that has an ML19 requirement. DM4 is ML20. Ah well. I wouldn't want DS3 anyway; DS1 is all you really want. So no real point in taking 19 outside of giving zeal (but not divine favor) a little extra duration.