It’ll run fine if you don’t have too much going on. I wouldn’t stress about it, just go for it.

I’d go for 16-core just because 64gb should be way more enough.

What does this mean? What is an application for the Touch Bar? Applications can use the Touch Bar.

The memory you get it was what matters most here if you’ll be using Docker regularly. Go for 32+GB of memory and the M1 or M3 will be fine.

What websites are you visiting?

Eject the disk. Right click it on your desktop and eject it.