Magento & Unleashed Integration - repost

I have a client that needs a new Magento website set up, then for it to be integrated with their Unleashed inventory software. We would expect to use an existing Magento design template, with very little custom design work required (if any). Approx 30 products would be available through the website. Experience integrating Unleashed with Magento would be a huge advantage. Key points that need to be answered/resolved: - Some of our distributors are on payment terms and others are not. We want to ensure Magento can be configured to handle this. - Ensure the currencies travel through into Unleashed accurately. We are working in several different currencies. - Specific customers have discounts, can this be configured - Invoicing and management of customer accounts maintained. - Ease of setting up of each product to ensure it is integrated fully with Unleashed e.g. SOH transferred – We will have a range of Simple, Configurable and Bundled products - The site needs to only be accessible by selected distributors through password protection