Can the notes area (at the bottom of the page) to be at the same height on facing pages? On all pages?

Question

The basic idea for our diglot layout is seen below. In our project, the secondary text of the diglot is an interlinear text on the inside part of facing pages (ideally with a decorative border). The primary text of the diglot is a vernacular translation, presented as a commentary of the interlinearized text, which includes extensive footnotes in the bottom notes area. 

The goal is for the height of the notes area to be the same so that it doesn't look wildly askew on facing pages. I'm not sure what the best solution to this is - have a fixed height for the notes area? Have a fixed height for the texts above? 

Similar products we have seen utilize a fixed-size border around the interlinearized text - This border is the same size size on every page and the rest of the material flows to match its verse numbers, etc. 

Is it a better approach to try to make the interlinear text (the secondary text of the diglot) the same size on every page? Or is it better to try to make the height of the notes area the same on every page? Or just on facing pages. Are any of these approaches possible?