U lucky that you're able to afford 2. Congrats on getting them both, btw.
I know we were one of the first to get it off Amiami along with Fiend. I wish I had 2 Jokers to have one set up with the interrogation dio which I have not opened up yet since I got the figure 3 weeks ago.
Since u got 2, u should keep the exclusive mask and detonator as well as the extra body and the laughing head sculpt. Then part out the rest to sell separately including the extra purple coat and grey blazer. That's what I would suggest. U probably end up getting most of your money back or even more from the 2nd DX11.