Can I knife throw to try and blind it, perception check for any vital area I might wanna stab, then veil + lunge at it with an attack?
No, right now you can have one action
so you can either do a dex feat attack to try and blind his eyes + bonus action the veil + movement
or bonus action the veil + attack + movement
the bonus action isn't an "extra action" i know it's confusing lol, but the Bonus Action is for abilities with the Bonus Action tag and small things the Host can decide on it being okay, like Virven's attention yelling at the first round