I'm not sure if you decide to sell them bcos you look for new or only bcos of the 3 points you've stated.
At any point, external situation is not in our control - so if you like your watches, jus hold on to them... they're wonderful !
If you're worried about the bubble, I would first let go the Daytona - IMHO the biggest bubble in Vintage rolex today ;-)
Personally I like the Explorer, Milgauss & the GMT in your collection !
Best,
mahesh.,