tub advise

i weigh wayyyyyyyyyyy too much. do i resurface my cast iron tub in the color i need, or do i buy a enamel coated steel, acrylic or fiberglass tub. I am remodeling the whole bathroom walls, floors, fixtures, everything.
i am having a contractor friend do the works so it would be done correctly and i would hire a professional resurfacing company if that is the route i go.
thanx
d

tub

What material is your tub? Given the three choices you give us, I would go with the refinishing, IF the tub is cast iron. Otherwise, I don't like any of the choices.