dotnetinvoice - minor changes asp.net

Looking for someone to make some minor changes in dotnetinvoice 2.2 script in vb.net Changes are as follows: 1) Enable taxable for client when setting up client 2) Choose currency for each client - (choice of 3) - when opens new invoice for client can see currency 3) All reporting can sort by currency 4) Add in Admin notes - only admin can see for each client ans shows up on invoice page in admin account 5) Add in 2checkout as payment provider for credit card instead of [login to view URL] - with auto postback after payment for confirmation 6) Make notes of all changes in code and provide documentation with all changes made Looking for this within a few days from start - payment by escrow after delivery of full application. Developer must have experience with 2checkout.