probably

I probably will be drinking beer and chatting with friends at 11.

I will probably be drinking beer and chatting with friends at 11.

I will be drinking beer and chatting with friends at 11, probably.

Probably, I will be drinking beer and chatting with friends at 11.

I probably will not be sober at that time.

I will probably not be sober at that time.

I will not be sober at that time, probably.

Probably, I will not be sober at that time.

I don't know where in a sentence to insert words like 'probably'. I know wrong placement could cause the meaning to change, if not totally incomprehensible. Please explain which choices are correct.

Thanks!