opinions on stroker kit?

I don't know if true but I've read by time you balance a cast crank with mallory metal it puts you close to forged crank cost.

My Forged crank needed balanced with mallory. I think it was around $200 for the balancing.

I would go with the forged 372. That way you have it in case you ever decide to start putting more power to it. The shorter stroke will rev faster, too (not that a 416 would be "slow" revving).