Statement of Applicability/Annex A Documents

Currently I am working on the Statement_of_Applicability document to properly fill out the different sections, and more specifically A.15 Supplier relationships area. In the Scope document, we specifically excluded suppliers for the initial certification process, but we fully intend to revist that process at a later date. Knowing that "Suppliers" are excluded from the scope, how would we specifically approach Internet Service Provider, Firewall Management Vendor, service agreement vendors, point to point network connectivity services to our DR and satelite office in another city? Would we exclude these external services/outsourced processes, or include them but specifically include the particular vendors for Information Services, as this is our main focus for the initial certification. Suppliers to a container shipping company, such as ourselves, would include any equipment, supplies, maintenance products for our vessels and offices aquisitioned through our co rporate purchasing department or overseas in various ports around the world, so I wanted to see if and where would be the line drawn in the preverbial "sand". Thanks in advance for the assistance.