Low point buy mythic campaign idea

[GM and the Holograms]

I had an idea for a campaign where the PCs would be common people elevated to mythic power levels.
So my question, before I put to much thought in it, is whether you think having a 10 or 15 point buy before going into mythic would be too punishing to the PCs?

[Saethori]

People have been able to clear Wrath of the Righteous, the Mythic adventure path, with a zero point buy. I don't think ten point buy is going to cripple people, Mythic is just that powerful.

[GM and the Holograms]

Good to know, thanks