dan is right about the bigger stand for bigger camera ..
you might look for the larger #2 semi centennial stand ...
it was made for the 8A grand century portrait cameras ( 11x14).
i have an 8A .. and #2 stand ... the stand's bed splits to allow for bellows extension,
and the ribbon springs are pretty hefty too.
have fun with your new set up! you're going to have a lot of fume, i mean fun