If I self pollinate a unstablized poly hybrid?

[Formallyhap]

The resulting offspring will be as genetically diverse as that plants generation? So however many phenos that plant would have shown that's what it's seeds will show?

Stabilized inbred strains when selfed produce as close to a clone as possible?

I am doing a seed run and was considering selfing a bag seed mother I have, and trying to see how much work it would be to find keepers.