Softbiz B2B customization

I need the following customization on Softbiz B2B script: front end - on product view page to show the number of total products that the seller has. - on category page possibility to filter the search by price, most recent - on product page, when "add to cart " pressed from unregistered to pop up window with login or register data and automatically reloading the page when fields inserted - adding feedback system / it can be taken from other softbiz script, just need to be integrated/ - to show numbers of items added in "my basket", as now they are not shown checkout process - availability to choose: to pay to PayPal or to pay on the courier when delivered - when paying PayPal to pay directly to PayPal account of seller seller dashboard - to show how an item has been ordered- via courier or via Paypal - availability to duplicate an offer made for purpose of easy publishing - availability to enable or disable an offer - to separate the ordered items from the inquiries / now they are showing together - availability with check boxes to check box the offer : paid ; shipped -seller to receive email with url of sold item /now only receive email with a note of successful sale/ admin back end to show how an item is ordered by courier or paypal/ report page to show how much a seller owns / generated from the percentage of the each transaction or order/ ONLY familiar programmers with the script can contact me. Please don't ask me to explain it further as already explained here, please read and consult by your self about time and money.