Currently building a wood strip foam core kitesurf board and would like some tips on glassing and how much weight it is going to add.

Board is 5'9" x 17" bottom was put on at 4mm and top at 5mm thick, current weight is around 6kg but still got a lot of material to come off as i shape the rails down ,what weight glass and how many coats recomended for that construction and roughly how much weight will it add.

Some picks of a foam core woodstrip surf shape board i am building at the moment.Bought the board at a garage sale for $5, had been snapped in half and very roughly rejoined and a base fitted as a coffee table.If nothing else i wanted to salvage the stringer to use as a template for another project, hollow wooden board (chambered)With the stringer removed i joined the two halves back together and started shaping it down.