Hastings Ring Gap?

.028-.030 will be fine with a good tune.
.032 would add insurance for a bad tune

I would use .030 gap on the top ring and watch the timing during break in 'keep it around 28-32 total'.
That's on the cautious side, not that it necessarily need that little.
Jmo.

The dynamic or cylinder pressure/cranking is what will really impact it.