Keep in mind that Blue-to-Green is NOT a Navy program, but an Army program.
Once you separate with an Honorable discharge, you are flagged as a Nuke. Coming back in as any rate other than Nuke won't happen. You can get a degree and try and come back as an officer. As for the mentioned program, there exists agreements between the services that they won't take each other's critical skills folks, thus CG's comment.