Initial timing set @ 30*. Engine seems happy?

If you own a vacuum gauge use that to set your initial timing. That will give you a good starting point.
Here's how it's done. Hook your gauge up to a non ported manifold vacuum source. Then advance or retard your distributor until your get the highest reading on the gauge . Then turn the distributor the other way until the vacuum drops 1" to 1.5". This will be your initial timing setting.
While 30* does sound a little on the high side it is possible that's what it wants.
Ted