Joomla Quote Module for our existing SERA Tools

We are sport timing company and we made some time ago our cool SERA Tools to manage the events.
Here we want extend it to make simple quotes to our customers.

- Extend the view "Equipments" with fields Quantity, Price 1/2 day, 1 day, 2nd day, 3rd day
- add the function "Quote" and add two text fields with opening text and closing text, rules etc.
- then the material must be selectable to add to the quote
- discounts
- fees
- payment roules
- multilingual
- some small extras and unforseen things

- Please only professionals!
- We don't pay any upfronts or initial costs!
- We give access to the websites only after accepting (we are tired to change the password everytime)!
- Further Work welcome, we have a lot of open projects!