Big gravity forms project

I need a lot of extension to gravity forms. All of this extensions must be build without changing any of the gravity forms files, only by using the integrated GF hooks. ---------- I need a new special-field (like address, name) that works like [login to view URL] This is only in german : Field starts at "Teilnehmerdaten: " First there is a selectbox where i could select the number of persons. In case of this selection there will be x form-lines displayed. e.g. If i select '2 persons" - there will be 2 form lines If i select '10 persons" - there will be 10 form lines. Each line has the fields (in english) : Firstname, Lastname, Birthday (datepicker field), Bike, Niveau (selectbox) At the gravity forms backend i need the possibilty to setup the persons-range for the first select-box and the entrys for the Niveau selectbox. The entries should be saved in a own database-tabe with is linked to the default GF tables. ---------- A new 'special field' (like name or address) to catch all informations that are required for creditcard payment (name, number, expire date ...). This field must work in the same way like the 'name' or 'address' field of GF. ---------- A new extended 'checkbox' field like the one from [login to view URL] I need to define the color and the description text at the GF backend. ---------- A new daterange-selection, like from booking-sites where i could define a start and a end date. ----------- You have to build 4 forms with GF to catch informations for event-booking and bike-hiring. This includes all the needed checks. We will define milestones for the project. I will upload the money to escrow for a mileston when the milestone starts. I only release all the money after the project is fully finished.