Your shipping will require a lot of thought. You will need to consider where you ship to, will it be only local or overseas? Think about whether you will offer free or flat rate shipping, pass on shipping costs directly to your customers, allow free shipping over a certain value or quantity of purchase, or give customers shipping options.
If you deal with particular couriers or postal services regularly, let us know. Many of them offer integrations which allow automatic postage calculations, label printing and associated services that make life a lot easier for you.