First, welcome back to Scryptic Studios! I hope we'll be seeing you around here more in the future.
As to High Moon, I think you'd probably be best served by filing that concept away and moving forward with something completely new. There are two reasons for this.
1. If it's that similar to the High Moon now on Zuda, you're going to have an uphill battle to differentiate your comic and make it stand out as not derivative of that.
2. Perhaps more importantly, if it's a project you've been trying to develop for a few years and nothing's really happened to move it forward, that could be a sign that maybe it's not the right project. Of course, there could be a thousand other reasons, too -- I have no way of knowing.
But it may be that you could find some creative liberation in just saying to yourself, okay, Charone, for whatever cosmic reasons, these two concepts are just not working out for me, so let's just set them aside over here and start fresh.
The other thought I have for you is, perhaps starting on a smaller scale would be good. Maybe try to just write a good short story (say, somewhere between 2 and 8 pages) and find an artist to illustrate it and submit it to one of the various anthologies listed on Caleb Monroe's comic creator services page.