I see what you're saying. A raglan sleeve won't be bulky, it's one of the least bulky sleeves there are, aside from a set in sleeve. Keep in mind that bcause of your gauge it shouldn't look bulky even if it is garter stitch. If it is to be sleveless, why not do a set in armhole, then add a nice edge around it. Then you wouldnt have any sleeve. You could still knit in in the round, just from the bottom up to the armholes, then do the front and back separately.
Does that make any sense?