Create Weekly CSV Product Update with Initial Customization in Big Commerce

We need to update products (weekly basis) on a Big Commerce website with approximately 23,000 existing products using a csv file. Additional initial customization includes: 1. Weekly update should only update price, availability and MAP price if applicable 2. Any manually added products already on the website and NOT on csv file should be ignored with update (these products all include "DLT" at the end of the product code/sku and are also in the "Manually Added" category) 3. Place any "new products on csv file that was not previously on the website in a "hold for review category" and make not visible on website 4. Make product Not Visible (out of stock) with available under Qty 1 in COMB (combined) column 5. Mark up customer's price by certain margins. Margin percentages are different based on cost. 6. Hide any item if freight policy is anything other than "regular policy". 7. Minor adjustments may be needed at later date inclusive with hours paid