Well after messing around with a lot of firearms and doing a bit of research we actually ended up going with a shotgun as some of you suggested. In 10 days a Mossberg 930 tactical will be ours. It fits us a lot better than our 500, should recoil less, faster follow ups, etc, etc, etc. We're also going to order a longer barrel for clays since that seems to be the kind of shooting we both enjoy the most. 
I'll still be gettin' a carbine as a fun gun one of these days though.

I'll still be gettin' a carbine as a fun gun one of these days though.

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