S3 yacht primer

[cheetah]

I will be ready to order the primer and all associated items any thoughts on how much primer I will need for two coats? the boat is 16 feet long and 84 inch beam. I will be priming and painting the console and hull the boat is gel coat and will need very little fairing.
Any recommendations appreciated
Andy

[glcost]

Does anyone know the difference between S3 WR155 and their new yacht primer?

George