Thanks podfan. Yes, there are a number of Wordpress ecommerce plugins.
pelachrum - I've not started doing any CSS modifications yet, though I know it can be styled extensively based on articles I've read, along with actual Magento sites I've visited.
Not sure about the scalability issues, but I think if we do start to experience that, then we can afford to go to better hardware.
And the same with modules, I do see some pricey ones, and again if we're getting good sales, then such add-ons might be worth purchasing.