Big Guy Alaia Dimensions?

Getting ready to build an Alaia and was wondering about dimensions.

 

As I'm a older, bigger guy (47 years & 240 lb), I tend to ride bigger boards 'cause I need the added bouyancy,

(for beach breaks I'm riding 6' 3" x 21" x 2 3/4" pupe) but I'm not really sure how this carries over to Alaias as

they don't seem to offer much float anyway.

 

I was contemplating building a 7' 6" Alaia in Paulownia, now my question, it seems a lot of peoples boards

are only 3/4" thick by 16" or so wide, would I gaining anything by blowing it out to something like 7' 6" x 20" x 1 1/2".

 

Thanks in advance, Paul