USB-C hubs or monitors with power delivery make this really easy these days. One cable gets you everything. Power, display(s), mouse/keyboard, Ethernet, and any other peripherals you need. It's absolutely worth getting a USB Ethernet adapter. They work way better than WiFi.
A wireless mouse is still worth it though. Logitech G305 is essentially perfect IMO. Extremely reliable, extremely low latency, months of battery life, reasonable price.