The company I work for is looking forward to make an online store for wholesalers (t-shirts, muggles, office co-branded supplies, etc.) but we don't store, process or transit any card data. The process is as follows: the user gets to our website, adds the products to the cart, after this our bank account number will appear, I get a notification and the user makes a transfer directly to the bank.
What security issues, PCI concerns should I worry about?