Ended up ordering a set of La Bella 760N-M and also a set of Pyramid 648. This is for string thru-body, so I need 33-34" silk-to-ball length for proper fit. Short scale silk-to-ball is not long enough. Might try D'Addario later on. Thanks!
If the neck length is a 30.0", I would think the ETB92M (medium) may be a better fit. I had a Mustang through the body a few years ago, and I think I used the ETB92M on it, and it was a good fit.