What I would suggest doing is stringing it up but hot shooting it. Measure the brace and and twist or untwist the stringto bring it in around 7 1/2-3/4 inches. Unstring the bow, place one loop on a nail and pull it tight, take a measurement from inside loop to inside loop and let thestring maker knowyour string length twisted.

I had problems in the past just letting the string maker know the length of the recuve.

Oh and get Chad (LBR) to make your strings.