That's quite a nice piece of work, intriguing to look at as well as use.
I confess to some thoughts about stepping up to 8x10 myself. But so far I've been working with either 4x5, for which I have a dozen holders owned since dinosaurs roamed the earth, or roll film. That allows me to go out and take a dozen or more shots on a major trek. If I do a big one, I'd like to use 8x10 holders, for which the going rate is a bit off-putting -- but then, it's a hobby, so it might still happen! (I've been looking at ePrey occasionally.) I figure this year I will try and hone in on the paper negative process which has been a little dodgy for me so far, and maybe next year do some heavy construction.
Your results definitely offer some inspiration.