You're in for a ride my friend, the end if EP3 is absolute cinema, and the next EP is basically best thing ever

TRUE

Obviously there are exceptions to it

Mostly, committee decides the amount of episodes a show will have and how it will spread (consecutive, only one cour, split, continuous and etc), the decision for the covering of the source material usually is in the kantoku and series comp hands to deal with, sometimes with a hand of the producer

And most of them are big fellas