472 seems to have been your best prop there. Setup for that should be between 9.5 mm and 6 mm gap between sponsons and prop shaft ferrule. 6 being 70% and 9.5 being 60% of the radius in the water. I'd be starting at 60% and working my way down. I've expect that the 2" should be usable you just need to find the right length for it. For me it's 14" to the end of the band or 13" to the center.