grapplin, construction and vital strike

[Spermy The Cat]

So I'm a level thirteen monk, with 2d8 damage from a Monk's Robes. Now, with Deadly Grappler and Enlarge Person, that goes up to 4d8. With an Anaconda's Coils with Final Embrace, that gives me another 4d8 damage on every grapple check. And when I get Final Embrace Master, that's 4d8 punch+8d8 crush.

What would happen if I took vital strike? Since I have grab from Final Embrace, I can use vital strike on a punch, and then roll on the punch to grapple them. So since I just dealt 6d8, and I get the constriction damage on starting the grapple, does that mean the grapple damage goes up to 12d8?

Or if I'm already grappling them, and I use a move or swift action to maintain. Does my bonus damage get boosted as well?

[Spermy The Cat]

I know that an errata removed the option to use Final Embrace on non-snakepeople, but my DM has allowed it in this case.

[Claxon]

What would happen is that you can't use Vital Strike when making a Grapple action.

Vital strike requires you to make the attack action, a grapple check is not the attack action.

[Texas Snyper]

So it looks like you can Vital Strike a single attack which will trigger the grapple attempt. However, I think vital strike doesn't modify your unarmed strike, it modifies the attack in the attack action.

It would be 8d8 punch (vital strike) + 8d8 (double your 4d8 punch) constrict.

[Spermy The Cat]

Is that with Final Embrace Master, though?