I've hit the Kristin, the Alissa, the Megan, the Jen and the .... well i forgot another one i hit.... but sorry i havn't tried the titleist your talkin about
Never played the Titleist. Have you tried the Taylor Made R 580? I think it is an awesome. My advice is to get your clubhead speed measured first and then make a decision on what stiffness you want the shaft. Being as big as you I would expect you swing pretty hard. JMO. Good luck.
Have you played any rounds this year? I'm playing on the American Amature tour this year. Its a blast to play tournament golf!