10' Tall Swing In Parlor Windows

We are renovating 1860s brownstone in Hells Kitchen. The parlor floor windows were originally the same height as the front door, about 10′ tall, with slight arch. We want them to open like French doors, swing in, without a transom. Our inspiration is the Parisian tall windows with faux balcony ironwork. We were looking at vertical casement windows from Marvin, rather than actual French doors, in order to minimize the mullioning and avoid thick center seam. Unfortunately, Marvin cannot provide these in 10′ height. We are looking at Hopes instead, but I would prefer a more traditional, wood product like Marvin. Looking for custom window manufacturer who could do 10′ swing in windows. Any suggestions would be greatly appreciated.