Custom wordpress plugin needed

I need this done ASAP, I'm hoping by the end of this week if not next. I have an existing website which I am porting to wordress. I'm an experienced web developer and familiar with wordpress; however, not with creating custom plugins. On the existing website I have 3 tables within a database that hold registration information which is gathered through a php form. Each table holds a different registration, for example one is for a winter clinic, while another is for a tournament. So the plugin I need would have to display each of these tables on separate pages. They need the ability to delete a registrant, as well as export that specific table to excel. Furthermore, there is a plugin named Contact Form 7. I'd like to be able to use that plugin to create the forms. For that plugin there is an add on plugin that extends it to a database, allowing the forms submitted data to be entered into a database rather than emailed. The problem is this add on plugin displays all the contact forms information in one giant page, rather than in separate ones like I need above. I'm open for suggestions on how to make this happen I just need the ability for my user to create forms, then have those forms data submitted to a database, then the ability to see each form data separately from each other with ability to delete a submission and export the whole table to excel.