I would recommend not using any heat shrink on thr drivers, just solder. Then in spring, desoldering the woofer and tweeter, pushing the cables back down into the cabinet, then masking off the entrance to the cabinets.
You can get away with masking off the tube connectors, i wouldn't recommend it for the woofers.
Then once the painting is done, reinstalling the drivers and use the heat shrink to make the connection more permanent.