Business website control panel needed

I have a website which I have designed in bigcommerce. The website is meant for selling digital items online. There are some flaws for which I want to prefer wordpress instead of bigcommerce and want to redesign the whole website in wordpress. Main Website is not a piece of great deal as it will be made easily. The only thing I am concerned about is the robust control panel which should have the following features: 1) The control panel should show the sell items and revenue etc 2) It should have the option to manage employees account and grant/remove rights from them. I want to integrate ready-made plug-ins of wordpress website themes and control-panel hence the work is not that much. Only interested freelancers should mark the bids.