OSCommerce Expert Needed for Store Modifications

I have an existing OSCommerce store that needs some modifications: I have Vendor shipping enabled, in addition to the USPS, etc modules. I need to make sure that the checkout process is working 100% successfully. Currently, some Orders will show up in Admin and some do not. I am not getting email confirmations for orders. Will need a thorough investigation of the current shipping and any issues will need to be resolved. I am seeing a lot of abandoned carts but then some of those orders come through, but not registering as orders in admin... May need to have Create Account required. Also need to have the following implemented: From Admin, Orders, I need to be able to print shipping labels directly. I should be able to choose from USPS, UPS or FedEx. This should provide a screen that is populated with all the shipping data and I can pay/print shipping label. Will also need to modify/add information that is send from papyal email when product is sold. Currently shows product/quantity and price. Needs to add attribute info, color, size, etc... I have a VIP module so shipping will need to be working in this module too. Please only bid if you have experience in OSCommerce and shipping. Please show related experience. Project budget is $100. Will be paid at completion of project. Will need current server backed up prior to any changes.