Carve 131 to Futura 122 or 133

[DJluc]

Hello specialists all over the world.

I want to change my carve 131 ( best board i've ever had ) for a futura because
the 131 earns his retirement.
Should I go for the 122 ( same width ) or the 133 ( same volume ) ?
I want to plane as early as the 131 ( normally with 8 m sail , flat water , i'm 74 kg ) and have more or less the same stability.

Thanks for your advises and comments.