Mark,
My thoughts were the same as Jim's concerning the JDJ option.
However, I would recommend shooting a 375 JDJ before have work done. While I've not shot one myself, I understand the recoil will get your attention and may be more than you want to experience.
Certainly, talking with JD Jones and asking for his opinion about your situation would be worth the phone call.
Blessings!
ShootnStr8