1) if you spend 2 additional power points, the ability damage you suffer to increase another score is delayed until the power fades.
2) If you spend 4 additional power points, the power’s duration increases to 1 minute/level (D).
3) If you spend 6 additional power points, the ability damage you suffer to increase another score fades when the power’s duration expires.
Can you spend 8 points on augments 1 and 3 to effectively negate the ability damage?
I suspect not due to timing. Augment 3 would trigger first and try to remove the damage before the delayed damage from augment 1 actually kicks in, but I thought a double check might be worth it.
I am not seeing anything that would cause the power to fade before the duration expires, could you break down your concern for me?
Yes, you can combine augmentation options 1 and 3 so that you won't take any ability damage when using the power (it is delayed and fades when the power expires).
If the power is dispelled, then it has "faded", and all the ability damage is applied immediately, and only is removed when the power's duration is reached.