Fashion Help Please...

There comes a time in every lady's life when she needs a little fashion advice from friends. This is one of those times for me, so please bear with me as I implore you for your help...
You see, I've been knitting this delightful sweater dress--so chic and graceful--for a few weeks (pattern courtesy of Lynne Barr's Reversible Knitting), and I've almost completed it.
But I'm having a bit of a hard time making some final decisions. For instance, the original pattern calls for a mini skirt , but I lengthened it while knitting because I thought a longer one would be more classic and thus stay with me for years to come.

However, now that it is complete, it certainly is adorable short...
Furthermore, the original pattern is sleeveless, but I thought I would add a small cap sleeve just to see what it looks like. I'm leaning toward the sleeves, but wouldn't mind a second opinion.

And so I'm throwing these two questions out to you, dear readers, to see what you think:
Is this dress more alluring with or without sleeves?
And is it more lovely shorter or longer?

Please share your opinion with me by posting your comment below! Hopefully with your advice, and a little more time, I'll be happily wearing this flirty little number this weekend!