I have such a desire to adopt again after we get our son home! And I have found myself using his race as an excuse
Our son is from Central Asia and we are CC, so he will be the only person of his race in our home. I don't see us adopting another Asian child (we don't qualify for most Asian countries after we get our son home) but perhaps Ethiopia, or a domestic adoption of a biracial child. I think it might be good for him to have another person who isn't CC. Then I start to overanalyze things and it gets crazy.
I think that if you really want to adopt again, there will be a way. We are not wealthy, but have managed to do this. As expensive as this process has been, it actually has encouraged me that it IS possible and we could do it again if we wanted to. Now, getting my husband on board, that is another miracle in the waiting