Thanks guys, will I need tap on any pink readers anywhere or not at these interchanges?

Wondering how long it would take also get to Liverpool Street taking these ‘default / lowest fare’ routes?

So as long as I tap in before 6:30am to start, whole journey will be treated as off peak right?

From reading the above I will need to go Merstham>East Croydon>Norwood Junction>Whitechapel>Liverpool Street.

Guessing that’s NR>Overground>Underground right?