Good start. I like #4 but would like to see separation between letters. I don't think the rounded gradation in the SMI will work color scheme wise but I like the concept of it being like a light (idea) shining outwards.
Can you combine INC after the concepts on the same line.
I noted in my brief that I am not definitely set in the colors but like the grey bottom part for the concepts. Blue was a conservative selection but if there is something you may feel works better I would like to see your idea. Thanks!