I think I'm going to do the sleeve's with the afterthough heel.
I learned of this with the pinwheel sweater KAL.
You get to the point where you want the sleves to be, use waste yarn, knit for as long as you need the slit for the sleeves to be with contrasting waste yarn, turn your work, and purl what you just knit, and break yarn.
pick up working yarn, and knit until you need to add the second sleeve slit, and do that the same way.
then when you are ready to add the sleeves, pick up the stitches, remove waste yarn, and start knitting the sleeves.