Why pay someone commission? If you want a hotel and park package these are available from the park's own website. After that flights are easy (my first choice would be Air France into CDG, worth the extra IMO) and you can decide whether you want to get a train, a coach a taxi or private car service to the park. I think Disney even do their own transfers. Nothing to be afraid of, just make sure if you can that the transfers to the park are flexible in case of delay.