Where about should my timing be set at idle?

AMC 360
Edelbrock performer series 600 cfm carb and cam
Edelbrock performer intake non egr
MSD ignition and billet distributer
Headman Headers

It's off and she's not running like she should. Stock calls for 12 degrees BTC. Should it be advanced more with the performance stuff? Seems like it runs better with more advance.

Ohh yeah, it's in an 89 Jeep Grand Wagoneer. More for low rpm torque, not high rpm. I rarely go over 2000-2500 rpm.