Unknown rebuild specs

Also it is a MSD box, the light might not be happy with the box. Really not sure what state the balancer is in either. Did the distributor come with a set of plastic “keys” to set the mechanical advance? You insert them in a window in the advance plate and adjust it so the key just fits. You can almost get it down to just about 7-8 degrees of mechanical if you want. If so, you can adjust the initial to what it wants and then play with the total.
Get your Initial and mechanical done 1st then try your Vacuum advance. Not sure if that is adjustable but you want around 50' with it connected at cruise rpms. JMO You'll get better mileage on highway cruises.