Australia Post addon for Marketpress

I need TWO SEPARATE ADDON PLUGINS created that will both work on WP Multisite Sub-Sites AND stand-alone Wordpress sites THE FIRST ADDON: Australia Post shipping for the Marketpress plugin It needs to: * be SEPARATE FROM MARKETPRESS PLUGIN * I need to be able to upgrade the Marketpress plugin WITHOUT losing any adjustments. So for this reason I need it to be separate from the Marketpress plugin. * Adds an option on the Store Settings > Shipping page in Select Shipping Method > Aust Post * Shipping type for each product would be using weight, which would integrate automatically with the Aust Post current postage rates. * provide real-time shipping rates from Australia Post using the Postage Assessment Calculator API. like this: [login to view URL] * shows Australia Post shipping calculations to be included for each product and in the checkout. Here's the page for Marketpress: [login to view URL] THE SECOND ADDON: Minimum Order Value for the Marketpress Plugin It needs to: * have an option to make the whole sub-site / site with a minium order value - eg everything in their shopping cart needs to total more than $?? * need to be able to set the $ value of the minimum order -eg: $50 * If the minimum order value isn't reached at the checkout, have a note added to the shopping cart to say that there is a minimum order value of $?? and automatically insert the amount the shop owner has set. * Checkout CANNOT be completed if the minimum order value hasn't been met Please give me a price on EACH plugin separately. I need this done THIS WEEK - so if you're not able to do this project within that time please don't bid.