i use nylon on other racquet. On the Babolat PDR GT . Ideal was nylon 10% higher.
I will go with 58 lbs. probably i will strung with VS Touch.
Yonex VCore 98D / Yonex VCore Xi 98 strung with full poly @ 46 lbs
Pure Drive Roddick GT / Pure Drive Roddick 2012 strung with full poly @ 55 lbs