If you tell Veral the gun you have he will cut the molds accordingly. You get basically maxed out at 1.600" OAL for the the 45 colt in the FA97. The WFN fits the easiest but while some guns seem to shoot them very well at shorter ranges they tend to destabilize at longer ranges worse than LFN or Keiths do. The LFN tends to, in my experience, shoot through more guns well than any other designs, I have found very few guns that don't like properly cast LFN bullets.
If the 1.600" OAL will leave enough lenght for a LFN bullet you are set, if not have him cut you of of his Keith bullets for the 260gr weight, should be a great match. I would also suggest having a 300gr bullet that has a different nose to it so you know what bullet is in your cases when you grab them. If they have the same nose profile then you may grab the loads without knowing it. It has been a trick that has worked well for me through a lot of different 45 molds and loads..