Macbeth Soliloquy and other questions to be answered

1. Macbeth is very weak willed. He doesn't think for himself and is very easily persuaded, even if something goes against his morals. I see him as a very weak person, since his wife holds the pants of the household. Very cowardly, since his wife had to finish the deed. Now he's gone crazy and killed the chamberlains himself, which shows he has a weak mind. 
2. I feel like he's just going to kill more people. He's done it once, and killed a pretty up there person at that, he'll probably kill a lot more of the people in the castle and eventually be caught or slip up. More likely, he'd slip up since his mental state is so frazzled. 

I'm afraid of consequences, but it's already too late.

I, one of the king's followers, had done the dirty deed

and now I can't return to a state of peace that once was.

One day maybe, I'll forget it all

just living life as King and to put it all in the past. 

But right now, I can't.

Right now, I feel the need to rid myself of these dirty feelings.

I have killed, more than one.

Whose to say I won't kill more.

I must be swift, and hide myself well.

For I'd be caught, and hung by the noose in the town square. 

I'll be known as a killer, murderer of the King and nothing more.

My family will be disgraced and my wife will be hurt as well.

I will not let that happen.
I must continue onward and keep this dirty secret under everyone's noses.