Nope nope nope. Would never even consider it. Snoopy has finally bottomed out, and I would never get rid of it at the current rate, especially as they're now starting to get into the hands of collectors that are going to hold them. It would be like selling AAPL when it's hit a low.
The Apollo XIII is even more rare (I think I've only seen 3-4 for sale in my years collecting, granted I don't pay a ton of attention to them), so I doubt I'd be selling that or trading that.
The Apollo XI is a pretty meh watch. I'd be fine getting rid of it, just not in conjunction with what you're going to have to let go.
How long have you been thinking of the refocus of your collection? If it's recent, I'd think some more before pulling the trigger. You shouldn't have to give up all three to get the JLC.