Help! Registration/Commerce plugin suggestions

Please help i am looking for a way to set up a registration for a summer camp we offer and i need to be able to accept multiple registrations for multiple events at one time. i also need it to close off registration once it reaches a certain number of participants and be able to use a rather large participation form. I have built the form via gravity forms so if there is a software that manages spots or inventory that integrates with gravity forms that would be great.

Please excuse me asking this question here as i am not sure where else to ask.

Thanks in advance.