Passing Information into Gravity Forms

I have a plans page that is presented to the user first which looks like this:
http://gyazo.com/4a4cdb3c639b7b22f87d73fb255958fd

When they click on a button to subscribe they are then taken to the register page which has the gravity form on it.

After they fill out the form they are then taken to the plans again that Protected Content shows and then they have to select the Plan they want and click again on their desired plan.

Would there be anyway to not have to make them select the plan they want after registering again. Could I pass the ID of the Protected Content in the URL?

Thanks!