STUDIO TIME - "The landscape is defined by eternity"

This behemoth (The landscape is defined by eternity) is nearing completion I think. I have been working these two panels on and off for 5+ years now. I started them on paper in a small bedroom studio. My vision grew and I mounted them with additional paper to 2 panels to make it a 4' x 8' piece.  I still had to work them separately because they were too big to fit as one piece in my tiny studio. At the end of 2012 I began renting a studio space that allowed me to finally work this as a whole and WOW, what a difference it made. I have spent the last year working on this pretty consistently and I hope to have it completed in the next few weeks. I took both horizontal and vertical photos of it because I am trying to decide how I want it to hang. Any suggestions, critiques etc. would be greatly appreciated. I really like it vertical right now. I feel like it is more impactful and tells more of a story. 

The more I looked at it in the empty room last night I kept seeing 6 more vertical pieces that size surrounding it and I kept saying to my self that I needed to get to work on those.  But it seems almost like an unreachable goal to work 6 or even 4 more that size and that detailed in a 6-month to a year time period so that I can keep they same look and feel. 

My goal is to do a one man show with pieces this size and maybe some smaller panels for filler.