French Doors overlap

I am owner buildering and supplying 2 sets of doors to the builder for installation that I brought brand new from ebay off someone who had brought them from bunnings. The are to be install next to each other and open onto a very small balcony. Whats the best way to have them installed so only one lock for each set. ie. one overlaps the other. Should i bevel out an edge in each or add a trim to one of each. if i bevel how much... 19mm?. How do i go about buying a reveal for the doors since this would need to be custom size - doors are 720mm wide but if the overlap then 2 together would be 1420mm . what size reveal would i need.

Thanks


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