Best layup for blank

[CaymanWind]

Hi guys.

I am planning a board of 130x36 My top and bottom layup will be a 4.7oz S-glass/ Carbon weave with a 4oz s-glass outside layer. I would like to make my blank with 4oz s-glass between each layer of diviycell. Would it be enough to use a 1/2 inch middle layer with 1/8 inch top and bottom sheet or should I use a 1/4 inch topsheet and a 1/8 inch bottom sheet.

Thanks
Ryan

Ps I will be using a vacuum bag