That's quite impressive! I also know all too well the joys of estimating focus (the swc is a rangefinder and it's viewfinder does not measure distance, and as I recently discovered, hyperfocal focusing is NOT a good method of focusing, even at small apertures).
That's good about the film! Ever thought of switching to Fuji instant film when the polaroid is dead? Cameras like the Mamiya 600SE also make incredible images.