Add functionality to Joomla 3 website

There is a business card site for Joomla 3, which must be supplemented with the following functionality:
1. The site now consists of a single main page. You will need to redesign the template so that it meets the requirements of the following tasks.
2. Next, you need to create 3 feedback forms on the existing design.
2.1. The user sends his code to the safe and immediately registers, indicating personal data in the finished form.
2.2. Create a form to support users on the principle of asking a question - get an answer.
2.3. Create a simplified and complete registration form.
3. Create the ability to display banners on the main page.
4. To refine any component of "Paid subscriptions" by linking it to the code sending form.
5. Optimize the work of the site by removing all unnecessary.

Payment via WesternUnion or PayPal. Leave your proposals on the cost, timing and method of payment for work.

With respect,
Igor