change in registration events

Hello guys okay?

Look I’m just developing a website sporting events and I am using the component events, because I saw that he is the most complete. More disliked the registration form in the events, found very weak. I wonder if he has how to edit or change it by Gravity Forms form as it is the most comprehensive I have seen on the market yet and he has the ability to view the list of subscribers.
Its redicionar or is there some plugin to do that?

How this site works with various events throughout the year the athlete every time tenque make your application and also wanted to know if you have to get the main data recorded for every time athlete who enroll or not enroll your staff need to be putting all the data and yes only choose the category and the desired event. For this he needs a site registration tried using BuddyPress could not even fit.

eX: Athlete at the event and it will aprece sign up. Ai will be redicionado clicking a page to enter the user of it. La he fills his details and team. and choose the category and form of payment. In the second event he already does not need to fill it all so choose the category and form of payment.

By inquanto these are my big questions.

I appreciate everyone’s help.