number of attacks for Mythic Champion

Talking about Mythic: 2° tier common ability:

Amazing Initiative (Ex):

At 2nd tier, you gain a bonus on initiative checks equal to your mythic tier. In addition, as a free action on your turn, you can expend one use of mythic power to take an additional standard action during that turn. This additional standard action can’t be used to cast a spell. You can’t gain an extra action in this way more than once per round.

And then the Champion feature says:

Sudden Attack (Ex):

As a swift action, you can expend one use of mythic power to make a melee attack at your highest attack bonus. This is in addition to any other attacks you make this round. When making a sudden attack, you roll twice and take the better result, adding your tier to the attack roll. Damage from this attack bypasses all damage reduction.

Can I stack both? My head says Yes, but Im not sure and then:

At least at 19° level, with 4 mythic tiers, a 2-hand-weapon fighter and Champion can do each round: 4 normal attacks + 1 "haste" attack (from boots or other) + 1 attack from Amazing Initiative (1 Mithic power used) and +1 from Sudden Attack (2 Mythic power used) =7attacks.

Can I say: all of this is correct? Cause it’s a bit confused to me but I’m not english native.

Aren’t 2 questions cause the first question can delete the latter. Thanks