Just remember to "spread the wealth" or "don't put all of your eggs in one basket." I try to never (never say never) buy more that one fund out of the same fund family, unless I check their individual characteristics to make sure they're not the same type of investments.
BTW, I just looked at AOD's B/A, and you're right, it could open down 20 - 30 cents. It has dropped below 4 before, and re-bounded. I think the "fiscal cliff" deal left investors feeling better about the tax on dividends, so they took the risk of high dividend funds. 6.7% doesn't look as good as 16.7%.
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