I know you have a lot of ideas, but where do you find the time? There must be a machine in your basement churning out extra hours. You have so many successful projects and this sounds doable--mostly because you do have so many projects. You seem to manage them very well.

A few points: writers like to write and find it hard to turn down an invitation. If you can show this is a viable platform, people will participate. If the platform is to be published in more than on place (as you describe), writers will be even more motivated to participate. And, finally,

The journal could also be used as a recruitment tool to bring other creative artists onto the Steemit blockchain

Cast the net wide and you will catch a variety of participants. This can only strengthen Steemit, as people who create value content (writers) join the platform.

Good luck!