Neckset amount on a 1973 Ibanez Concord Acoustic

Hey guys!
I have heard that on some Gibson Jumbos and other guitars like Ibanez Concords that the neck is usually overset in order to have a good breakover angle at the saddle/bridge pins. I am currently restoring one, and the neck joint is coming apart. I think it needs a neck reset.
What is a typical overset amount for these type of guitars with this saddle and bridge pin layout? I'd like to know a ballpark amount that I can shoot for..

Cheers!
Mike