Form of submission of the application

Website on joomla
You need to write a script for sending the application. Before the table, the type of goods (5 types, depending on the type of goods, the price per square meter changes).
The user then sees a table with the following columns:
1. No (it is automatically assigned a serial number starting from 1)
2. Height (the client enters a number into it)
3. Width (the client enters a number into it)
4. Quantity (the customer enters data on the quantity of goods)
5. Price (automatically assigned). The value in square meters of 2 and 3 columns is calculated and multiplied by the price of a square meter. Price per square meter 3000 rubles)
6. Color (the client can enter the value, or can click on the button, which will be presented 10 most popular colors). Clicking on one of them, the color value is also substituted.
7. View (here the client from the list selects one of the 5 values presented). Depending on the value chosen by the total amount of the application changes.
8. Note (the customer can write anything here)
9. The button "Review" and "Click on which you can attach the file".

So you get a table of 9 columns. There are 20 lines on the page that can be filled with data. By pressing the button "Add" is added three more lines. The bottom of the table is the summary:
20 goods, total area xx sq. ., in the amount of xxx rubles.
And send the button.

After clicking, the text comes out – thank you for the request.

The post office receives a letter with this table that I attached.

Suggest how this task will be implemented, at what time and for how long.
Preference will be given to those who can make the task as simple as possible so that I can make minor changes to them.