I think 2 poles 3 positions is good, assuming you'll join together all signal grouns as per original Quickie.
I think you'll want a non shorting one also, or a " BREAK BEFORE MAKE "
QUOTE:
Shorting (or make-before-break): the switched terminals are briefly
connected together while the common terminal is moved from one
to the other. Used when you don't want the circuit open at any time,
and you can accept that the terminals get briefly shorted.
Non-shorting (or break-before-make): the common terminal is
briefly left floating while moving from one switched terminal to the
other.