Which surfboard? 13 year old female

I am currently in the process of learning to surf on an NSP 7'2'' Funboard. I know the quality of these boards is bad, but I can assure you, my current board is most definatley not permanent.
I just wanted to ask advice on which shortboard to get after I can sufficiently catch waves and turn.
I am:
13 years old
Female
4'11''
87lbs
I try to surf atleast once a week, it depends on whether my Dad can take me.
My Dad has a custom made 6'6'' board, should I use that after? Or should I get a minimal?
I just wanted to ask advice on which shortboard to get after I can sufficiently catch waves and turn.
I am:
13 years old
Female
4'11''
87lbs
I try to surf atleast once a week, it depends on whether my Dad can take me.
My Dad has a custom made 6'6'' board, should I use that after? Or should I get a minimal?