New vtiger modules and customizations

We need to extend the vtiger CRM with additional modules to support extended Product Features, Product Accessories, which can be bundled into Packages, multiple Product Pictures and Financing plans. This will also require some modifications of existing modules. We also need to modify the .pdf quote file. The coding should strictly adhere to vtiger coding standards for creating new modules and needs to be documented in detail to allow easy vtiger upgrades in the future. Please apply only if you have extensive experience in vtiger (or sugarcrm) with demonstrated portfolio with examples that you can show where you added and modified existing modules. Details of the project are in attached files.