Customisation of creloaded b2b 6.2 admin area

We are looking for a creloaded/oscommerce expert to carry out the following customisations on our CRELOADED b2b 6.2 shopping cart: 1a) In admin area, update customer pages to allow for inputting a percentage discount (e.g. every customer can have a specific discount per manufacturer). Presentation could be a series of input boxes beside a printout of all manufacturers in the system. Discounts should have default of '0' until specified otherwise. Example: [label: manufacturer] [textbox: discount percentage] [label: manufacturer] [textbox: discount percentage] [label: manufacturer] [textbox: discount percentage] etc.. for all manufacturers ...updates are applied when user clicks the standard page update button 1b) On front end, if this customer is logged in, this discount should be applied to any product prices shown on the screen, which in turn is used to calculate total checkout cost etc. Applied discount should be shown to the customer during checkout, and on invoices/order emails etc. 2) Ability on customer screen to set a specific price for specific product(s). This price, if set, should override any discount from (1) above, and also override any standard price entered. Entry form will will be presented as: [dropdown: product] [textbox: price entered] [button: update] [button: remove] [dropdown: product] [textbox: price entered] [button: update] [button: remove] [dropdown: product] [textbox: price entered] [button: update] [button: remove] [dropdown: choose product] [textbox: enter price] [button: add] 2b) On front end, if this customer is logged in, this product discount should be applied to any product prices shown on the screen, which in turn is used to calculate total checkout cost etc. Applied discount should be shown to the customer during checkout, and on invoices/order emails etc. All bids will be considered. Thank you.