SharePoint Tasks

I have a SharePoint Portal 2007 using WSS and MOSS I require a number of functionalities to be built into this site. mainly, we are using SharePoint Designer and InforPath Forms. There are a number of requirements. I do think coder must be very good in InfoPath & SPD For instance, we don't want users to have direct contact with lists. We want them to have InfoPath forms to use in entering details to be stored in lists. They should also have forms for viewing list items. Some of the out of the box functionalities require customization. For instance, we want to take the SharePoint Calendar and customize it such that events are grouped into categories and these categories are then represented with colors. It means every event entered into the Calendar will have a color. There is the global events Calendar. However, in each sub-site, a view of the Calendar list is to be presented in each subsite. (This means coder must understand how to link a view to a calendar rather than the default list This list is endless. Another task is this: Server information is sent out every morning to a set of people. There are other info sent along. We want to automate this. May be we can use info path etc. Please note that this work is not about coding but using InfoPath and SharePoint Designer 2007.