Magento Upgrades.

I need these things fixed on my Magento Store. Looking for good Programmer that will be able to go down the line and give me a general price and time estimate on each. Not all of these need do be done at the same time, and any quote given is not final. Im just looking for an estimate - Then i can prioritize accordingly. I know that you will need additional information and this isnt much information to go off of. So please adjust your budget and time to determine the base cost. Feel free to DM me with your hourly rate with it as well. or just skip the item. Thanks, -Allowing purchase orders to be used for specific customer groups. -Magento version upgrade / Move from dev to live environment. Upgrade to v1.5.1.1 -Front-end of B2B dev site is down. -"Payments By Customer Group" configuration option is not available in upgraded Magento. -Quantity drop-down functionality in the B2B Store (front-end) -Free product offsets for prepacks and displays. Automatically added to cart. -Bug - Custom pricing options not functioning properly when creating orders in B2B back-end. -3rd Party Shipping Option -Hiding USPS shipping option for non-Hawaiian retailers -Fix for order summary sidebar on Check Out page. Missing Subtotal, Grand Total, etc. -Follow up on Brandwise integration -Quickbooks Integration -B2B Quick-Start Guide - development -Product Images for Store - Prepacks and Displays