Limits to gaining stats from mericle wish and tomes?

[Shin Okada]

Luckily the party found a headband of intellect +2 last session though so I'll be covered for the remainder of RHOD and then when that is finished I can start hunting down a way to get some wishes. I think you can make scrolls in a day too rather than having to wait months if you wanted to make the tomes. edit: Drat, it still takes months to scribe the scrolls. But since your so close to epic anyway you probably can find an epic caster that can make them for you.

Before trying to have inherent bonus, the PC should buy or create better Headband of Intellect. Or should upgrade the current one. It is much cheaper.