dynamic repeating entry form

Dear Devs,

I'm in need of adding a dynamic form onto my wordpress site with the ability to email me the fields. Here is a good example that I came across with. (https://docs.google.com/open?id=0B4W5PB1rmBbjTGpONTJGOGRBY2M)
On this form, basically, user can add different fields (URL, color and quantity) of a product. And by hitting the "PLUS" sign, they can add repeating forms with same fields. Usually 30-40 forms are needed. They can also remove existing form by hitting "CANCEL".
Below the repeating forms is the place where they can input their personal info, however, this doesn't need to be repeating.
After they are done, they will hit submit and get a confirmation message on their ends. On my end, I would like to get an email with all the fields group by forms.

I am pretty new to wordpress, I'm not sure if Gravity has these kinds of features. If so, I want to jump in on boat.

Best,
Ivan

Thanks for the input. Do you know if there is any demo or example for my application? I am not good at doing codes myself, so I kind of want to make sure it is doable before purchasing.

Also, is the personal version good enough for that particular use of forms? or I will have to go "Business"?

THANKS!