Deep pleats

[KnittedReenactor]

I am sure Barb T or another experienced maker will here shortly.
Usually a 8 yard traditional will have about a yard of fabric dedicated to each apron, over and under. That leaves 6 for the rear pleats. So your total rear fabric sounds ok.
Are you pleating to the stripe (red/white/alternating), a general block of color, or are you attempting to replicate the pattern?

[BertMcG]

Usually a 8 yard traditional will have about a yard of fabric dedicated to each apron, over and under. That leaves 6 for the rear pleats. So your total rear fabric sounds ok.

I have done a couple with 6 yards in the pleats but they had close to 30 pleats so much more shallow, but this would be pleated to the sett so only 17 wide and deep pleats, I don’t know if that would have the same swing as more and shallower pleats.