I eventually chose the deep V-neck option. I think it will look pretty good.
Now, the next question is: what kind of sleeve do I want? I have a couple of options, with some sub-options.
Option A, the more exciting option, aka the one I would prefer to knit:
This is an elbow-length sleeve knit in the lace pattern used in the body of the cardigan. A wide border in the border lace pattern is knit in larger gauge and falls over the elbow. I would leave the inside of this border un-seamed, so that it can be ruffly and fluttery.
Option B, the safe, practical option, aka the one I would prefer to wear:
A fairly plain long sleeve, ending at the wrist, in the lace pattern used on the body of the cardigan. There is a possibility to add a bit of interest: for instance, have a smaller, ruffly border like the first option, but extending a bit over the wrist; or, without lengthening the sleeve, put in a small border in the border lace pattern, so that the sleeves look just like the body of the cardigan.
Let me be perfectly honest- I do not wear fluttery sleeves, and they would probably get on my nerves. I'd put a jacket over it, and get all annoyed that the ruffly bit is wadding up at my elbow. I'd reach over the table for the salt, and drag the ruffle into the ramen broth.
But, to also be perfectly honest- this cardigan cries out for Option A. Option A gives it a true summery, skipping-along-garden-lanes, running-through-fields-of-wildflowers feeling. Option B feels like the mother of the skipping-running summer sprite, hanging back waiting for the imminent skinned knee.
If I were knitting this for anyone else, or writing it as a pattern, no question I'd go for Option A. But I think, in the interests of actually wearing the finished object, and not wasting this beautiful Habu silk, I should probably knit Option B.
Oooh, is this what it feels like to be an adult?