Let me return to your question now. The above were my general thoughts surrounding research projects.
But could you say more about the investigations that you have in mind?
Perhaps even better than answering that here, why not start a discussion for the investigation you are thinking of. That way you could also get some real feedback from colleagues.
I personally like to "think out loud" on the forum -- even if nobody replies -- as it feels less lonely, knowing that at least what I write will be read/considered by *somebody* somewhere.