What you selling and how many items? I sell makeup items in my store as well as online. I really wanted to keep the # of systems to a minimum. I have about 200 skus and am limping along with Infusionsoft on its own, but I can tell that if I grow in products vs services, I would need to bring on anohter system that tracks inventory, has decent reporting and allows a real POS experience. The online experience for your client is great wiht I/S’s store; it’s the back office and POS situation that are extremely limited. However, maybe you want to create it as a test run? It’s easy to use IS eCommerce and you could play around with it as a test of concept etc.