Even if you think a revolution is the way to go, you don't do that by marching on the capital. Control of a building doesn't give you control of the government. The Jan 6th people were fucking stupid. How you would do it is dispersed action that can't be broken up or tracked easily. I don't know how people are so stupid to think taking over a building would do anything. What reality are you living in?
A march on the capital as a protest could be good though. It won't change anything itself, but it could motivate people and show there's interest in the movement. Not an actual invasion of the capital, but a large group showing up to demonstrate.