Advanced Customization For SugarCRM

Hello, I am developing in SugarCRM CE 6.2.1. I need some specific things accomplished. Please note these all need to be performed on custom modules. 1. Advanced Field Calculation – If field1 has a value/name perform calculation, ie. field2 * 0.01 and if field1 has no value leave blank. 2. Populate a dropdown box from a field in another module. 3. Up on save of a new record populate email template to be mailed at intervals of 1 day, 18 days and 28 days. 4. Upon save generate a contract/document with fields from multiple modules into a un-editable/locked pdf available for download and/or auto email. 5. Custom module to webform – I need a webform that will put records in to multiple modules in the crm. Thanks for your time.