Will this work? Perhaps only as an experiment. Stranded with banana plugs is really a better option.
Are you an electrician? Cause this is how they’d wire a light switch. I really don’t recommend anyone use solid core wiring because they are pretty brittle. They want to be put into a wall or conduit and left alone for 30 years. Every time you move them you break them a little.
Next, there’s the hardness of the connection at the terminal. Very hard metal to very hard metal here doesn’t tighten down very well. The lack of malleability prevents the squishiness that creates a tight screw-down terminal. Light switches have wire guides to ensure the wiring is flat to the contact plate and to the screw head and allow for quite a bit of torque.
The one area where I’ve seen solid core wiring used professionally for speakers was at Magico and then only on certain models and internally. Everywhere else they used Canare.
If you want to use AC wiring as an example to follow, look at how AC plugs and receptacles are built instead of how the in-wall wiring is done. You'll see tight spring connections being used.