IMO:
I see the first stage--getting a smoke on.
I see the second stage BUT why to only 155o? Why not all the way to the usual 190-200-205 ?
Third stage is as Dustin suggests--get some sort of dry crust on it.
The size of the meat won't matter a heck of a lot as I've done 1 lb FROZEN steaks and they are done in the same time as unfrozen.
I think the SV component is meant to offset the possible/sometime temp fluctuations we get in the WSM.
edit--I think I'd want to try a smaller piece--say the point and see how that goes. Not commenting on the spice mix though. I do like Korean but that paste is some spicy

. I'd use the usual rub (1st time anyways). I know you're asking about SV and not the recipe itself but:
Why SV? Been discussed a lot here but my reason is it's so easy. Get it set to EXACTLY how you like your steak based on temps. Finish on the grill 4 minutes TOTAL time: twice each side/rotated for cross-hatch marks.
I've done cheesecake (well, lots of cheesecakes

) in it-->heavenly. Short ribs as well. And raw chickpeas in preparation for hummus.
Did salmon once but prefer that on the grill alone. It's a quick cook so no advantage to SV IMO.
I SHOULD MENTION: I'm doing the SV in my Instant Pot (not anova).