Homebirth Newbie! Any sage advice?

Sa

I am not due until late Sept and this will be my 3rd child but 1st Homebirth (waterbirth).

My other children will be 6.5 and 2y3m when this little bean is born.

Any sage advice? Tips? Things you wish you knew beforehand?

Also, definitely having my oldest present but what about my (then) 2 year old? My fear is she will be crying and tantruming and wanting me while I labor.