HELP set-in sleeve in half fisherman's rib

I'm currently making a cardigan (Honey Cardigan by kutovakika) in half fisherman's rib, however I'm modifying it to be a set in sleeve instead of drop shoulder.

I'm about to start the sleeve cap and I was pretending to follow Kristina Virka's method. Do you think this is the right approach or should I try something else? This is my first project with this stitch.