Should i buy 7 days or 14 days

Hi
could you please help me advice if i should buy 7days or 14days.
is there any way i can buy one or two day pass after 7days.
i will arrive Tokyo Haneda on 3 Jan 2024
03/01
04/01
05/01
06/01
07/01
08/01
09/01
10/01
11/01
return on 11 Jan 24 early morning.
I am planning to visit to osaka and kamarkura also.
thank you

thank you