For me, I'm probably always going to want a bigger rotation than that. Only 2! I couldn't do it.
But I do respect the idea of consolidating down to fewer pieces that get lots of love, and subsequent wrist time.
Agreed all of those you mention are somewhat easily replaceable...and all great watches in their own right, IMO. So you just have to ask yourself if they would truly be missed. Yes, you can always find a Sub, but would it be the same? Very personal decision.
Sounds like you've got the fever pretty bad, though! I'm sympathetic, believe me....sometimes the itch MUST be scratched.
Maybe ask yourself the question this way: does it feel like you're trading three quarters for a dollar?
If so, then fire up another round of shots* and and get that GMT!
*Patron Silver for me.