Sleeve Steeks?

I am making Autumn Rose as a gift for my sister who has requested solid color sleeves. I am ready to join the sleeves to the bodice, but the more I think about it, the more I wonder if life wouldn't be easier if I steek the armholes, finish the sleeves, and then attach them. Has anyone tried anything like this? I know raglan sweaters are often made this way, but since the neckline on this is different than most, I wasn't sure. Thanks for your help. Everyone's sweaters look lovely!