How many days/far/much in advance

[Dunno123]

Hello. Please, could you tell me which of the following sentences sound idiomatic?

1) How many days in advance should I book the ticket?
2) How far in advance should I book the ticket?
3) How long in advance should I book the ticket?
4) How much in advance should I book the ticket?

If there's a better way of saying that, I would appreciate it if you could tell me.
Thank you very much for your help.

 

[PaulQ]

1 -3 are OK: 4 is common informally although "much" does not have a strong nuance of time to it.

 

[Parla]

To me, #3 sounds a little less natural than the others, but I think they're all acceptable.

 

[Dunno123]

Thank you! I've also tried to search these and similar sentences on Google to see how many results I would get and 2) got the most results and 1) got the second highest number of results, which seems to be in accordance with your answers.