Not a bad choice there, Joe.
The goal of my "thinning" is to eliminate duplicates which means that a vintage must go; specifically, the my cal. 565 Seamaster so that I can keep my special occasion bumper.
I have no problem with that decision but it will be tough to choose between the black and blue SMPs.
Ultimately, I plan to have one chronograph (105.012), one GMT (EXPII), one vintage, and one diver.
I've never owned a Dynamic but I've come close several times. Yours is definitely a beauty.
BTW, I never intended to buy a Rolex. I had been there and done that years ago. I set out to fill the gap I had tried to fill four times with the GW - an all purpose GMT. The EXPII ended up being my GMT of choice and it just happened to be a Rolex. ;-)
Fr. John+