Pergola design and 3d modelling

I am looking for someone to model one or perhaps a few pergola designs on a house in Italy. I have photographs and detailed measurements also an idea of what style i want. I intend to have this constructed from stock sized timbers. The initial work is just to model but once happy will want detailed drawings.
The site is right on the seafront and is therefore subject to a lot of windage, i therefore will need some assurance as to its structural integrity.