DwKobold gets the Epics on 3, 6, 9, 12, 15 and 18.
So that's just a +6. Not Bad.
Doing a Dark Chaos Feat Shuffle would work with DWK and the Epic feat.
Argument about when DCFS is available, preferably do it yourself.
Then it's just a formula of how much exp is expended vs how many feat slots.
Each DCFS generates a +1 to a stat.
Pretty good numbers, right there.
PAO deserves a bigger look.
Put an 18 in Wis and Cha with racial adjustments, and then find the best PAO form.
DWK is restricted to True Dragons of course.