I would drop the tension by a couple of pounds, for starters. The way I see it every stringjob is a guess for the tension until you find the right tension, so why waste a guess by using the tension of a 16x18 stringbed. But if you are comparing the two frames as some sort of study, I would go for the same tension on each.
4 racquets: Dunlop, Dunlop, Dunlop, HEAD
Alpha Pioneer DC Plus stringer