Interactive Sales Performance BI Dashboard

I need a brand-new dashboard built from scratch to help me track overall sales and business performance in real time. The layout should present revenue, sales targets, and growth alongside products, orders, and customer-purchase metrics so I can understand both high-level trends and item-level movement at a glance.

Here is what I expect to see when the work is complete:
• Panels that display revenue, monthly and quarterly targets, and percentage-to-goal growth.
• Sections breaking down products, individual orders, and customer purchasing behaviour, all filterable by date range and category.
• Clean, intuitive visuals that make comparisons easy—think flexible charts, sortable tables, and clear colour cues.
• Connection instructions so I can plug in new data sources or refresh existing ones without touching the underlying design.

I work mainly with CSV exports from our sales platform and would like the dashboard prepared in a mainstream BI tool such as Power BI, Tableau, or Google Data Studio—whichever you feel delivers the best balance of speed, flexibility, and shareability.

If this fits your skill set, please outline which tool you recommend and how long you’ll need to deliver the finished, fully interactive dashboard.