Magento custom reports - External file - repost

Hello I need the following requirement to be converted into all project management documents with all details as per se. I am an owner of a webshop based on Magento, and I need a custom work to get some reports. I need an external php file with some filters and show on screen the following data, with the option to export to CSV Filter 1: Select box with tree options: Show Orders, Show Invoices, Inventory Filter 2: Date from - to Filter 3: Order Status (no need for "Inventory") Filter 1: show orders. I need the following info on screen: ORDER ID - STATUS OF ORDER - DATE - TOTAL ITEMS - TOTAL WEIGHT - SUBTOTAL - SHIPPENT COST - TAX - GRAND TOTAL - COUNTY Filter2: show invoices. I need the same, but only the orders that are invoiced. INVOICE ID - DATE - TOTAL ITEMS - TOTAL WEIGHT - SUBTOTAL - SHIPPENT COST - TAX - GRAND TOTAL I need at the end a resume of the data i´m showing on screen: TOTAL ORDERS (INVOICED OR SIMPLE ORDERS), TOTAL ITEMS - SUBTOTAL - TOTAL SHIPMENT COST - TOTAL TAX - TOTAL GRAND TOTAL Filter3: inventory (we have a lot of grouped products) ID - SKU OF PRODUCT - NAME OF PRODUCT - QTY SOLD - WEIGHT. Only Magento experienced developers (Backend). Thanks and Regards Rohit