Am I going to weak with seedling dwc solution? If ...

Have your seeds broken the surface yet? I would wait until the roots are growing out of the bottom of the starter cube before putting them in the dwc. They wont need any nutrients or much water the first few days. They can suffocate from too much water pretty easily until that root appears. Once they go in the system then the 1/4 dose nutrients you have is a good place to start for at least the first week in the system. Hope this helps.