If I were you, I'd take the D&C.
I lost my bub at 18 weeks and was induced and sent on my way about, oh, 30 minutes after giving birth.
A week later I was sent back in because I had increased bleeding and painful cramping and found out all the placenta hadn't come away (a 2 min US can show this, I don't understand why they don't do that US before letting you leave with things like these) and I needed to have a D&C as well.
It made the process so much longer, not to mention having to sit around for 4 days hooked up to an antibiotic drip because of the extra risk of infection didn't exactly help the grieving process. I felt like I got booted back a week and I had to live through the loss all over again.
If bubs wasn't so big and I didn't have to give birth to him I would have gone straight for a D &C. After everything else that you've had to go through the last thing you want is having to deal with physical pain ontop on the emotional. In my opion anyway.

I have heard from alot of people, including Dr's, Gyno's, Obs, Midwives etc (oh and I few girls in BB ) that in most cases after a D&C you can fall pg alot faster as you have a "clean surface" to work with, iykwim. Like a nice clean cosey home for your next baby to snuggle into.
But, at the end of the day it is your call, and only you know what is best for you.
Good luck, and I'm so sorry that you've had to experience losing a little bubby I wouldn't wish it on anyone.

Salad, big for you to, chick. I would have been devistated as well.