Window-shakers would make it trivial to zone the cooling, maybe more
than you really want. Depending, they are noisy.
Their side-curtains for sealing opening in window are typically lousy,
which doesn't boost efficiency.
Window-units should really be on a circuit such that there's minimal
voltage drop from the panel to the outlet, so some rewiring may be in
order. Of course, for motor-loads, the outlet should not be
"back-stabbed", but with screw-terminals.