Sooo I just got an idea. what if I get about 1" MDF wood and measure it to fit my PVC floor (where I highlighted with brown in the picture), then put some kind of a carpet on it to make it look nicer and then drill that as a footrest for this rig.
Then I can possibly mount the pedal on that very edge PVC pipe and let the bottom hang on the floor.
I'm about to give it a try with some scrap pieces of wood I got laying around.

mounting this pedal is the last part & the hardest part IMO