Thanks. There is a reason why I asked in the min/max forum, because my build skirts the grey line between a good build and an optimized build.
So, furthermore, The Whirling frenzy ACF gives the following:
A barbarian with this variant form of rage doesn't gain the normal bonuses when he enters a rage. Instead, when a barbarian with whirling frenzy enters a rage, he temporarily gains a +4 bonus to Strength and a +2 dodge bonus to Armor Class and on Reflex saves. While in a whirling frenzy, the barbarian may make one extra attack in a round at his highest base attack bonus, but this attack takes a -2 penalty, as does each other attack made that round.
Does this stack with a Tribal Protector's Wild Fighting ability:
Similar to a monk attacking with a flurry of blows, a tribal defender of 2nd level or higher can enter a state of wild fighting, attacking in a storm of ferocious assaults. The character gains one extra attack per round, at his highest base attack bonus, but all the character's attacks in that round suffer a —2 penalty. This penalty lasts for an entire round, so it also affects any attacks of opportunity the protector might make in that round.
They both sound very similar...
And more so, if could this be used with a Frenzied Barbarian's Frenzy ability:
A frenzied berserker can enter a frenzy during combat. While frenzied, she gains a +6 bonus to Strength and, if she makes a full attack action, gains a single extra attack each round at her highest bonus. (This latter effect is not cumulative with haste or other effects that grant additional attacks.)
This would be a ton of attacks, regardless of the attack penalties...
