A friend did this on my old HT with 1/8 (I think) vectran.
What kind of line are you going to use?
Unless you use PBO or dynex dux (pretty certain they don't come in small enough diameter and they are very pricey) then make them several inches shorter because they will creep. On the HT I think the side stays crept like 4 inches or so. Makes it difficult to really make them to a length that you can still use the staymaster adjusters. On trap lines it isn't as big of a deal.
In the end, I think the trouble of line as stays from a length, creep point of view outweighs any advantage they have.

If you do go ahead and do it then use a lashing type system on both sides so you can have plenty of play to tighten them. My friend's vectran (at least 20-25 feet maybe) may have even crept 5-6 inches.