Sales Contracts

We have a sales contract that our sales rep use that is under new development. I am looking for someone that has experience or access to something like AE forms. The contract and fillable part is all done, But i need to add some custom buttons that when clicked either add or remove parts of the contract. EX: when you click "used vehicle" button, it hides or removes the new vehicle warranty section, and when you click the "new Vehicle" button, it inserts a copy of the manufactures warranty into the contract. I have attached a copy of the contract. could you please let me know if you have the ability and what the cost would be? I would also like to add a button that applies a watermark of "draft" over the top unless the box is un checked. your speedy reply is appreciated. once we figure out if and how much to perform this, I can give you specific instructions on what needs to be done. I would also be interested in making the form available for mobile use.