Modificações no Opencart - open to bidding

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I have a Mijosoft solution (Joomla + Opencart) and I need modifications in Opencart to comply with requests of my client.
For that, I need a package of modifications:

Modification 1:
In admin product list I need the next columns (in that order):
- REF (is the SKU with REF name);
- Category;
- Manufacturer
- Product Name
- Year (is the Model who I modified the name);
- All attributes (one column for each) In my case, i have a maximum of 7 attributes.
- All prices (the normal price and special prices)
- Weight
- Status
- Action
All columns sorteable and filtered

Modification 2:
My client have the next rules:
Sale and Delivery Terms:
- for orders exceeding 600 Francs, delivery is free of charge;
- for orders less than the above, a delivery charge of 20 Francs, will apply;
Discounts and Quantities
Red Wines, White Wines, Rose and Sparkling Wines:
- from 36 bottles, each of 750ml, 6% discount;
- from 60 bottles, each of 750ml, 10% discount;
- from 84 bottles, each of 750ml, 13% discount.
Fortified Wines (sweet):
- from 12 bottles, each of 750ml, 5% discount.
Discount on Pick up:
- from 24 bottles, each of 750ml, 3% discount.
Cash Payment:
- from 24 bottles, each of 750ml, 3% discount.
Cash Payment on Delivery:
- 3% discount.

I need the Opencart respect all that rules

Modification 3:
My client have 5 customer groups. One is final client and other 4 is trades.
When my client insert the prices, put the price with tax only in first group. All other prices is without tax.
When users show products (category; manufacturer; product; shopping cart, etc.) I want display in first group "Include VAT (8%)" or "Include VAT (2,5%) and in the other groups display "Exclude VAT". The other groups display the Tax only in shopping cart.

I need a budget for each modification and all.
I need support after instalation!Habilidades necessárias:
Joomla, Open Cart

Skills required:
eCommerce, PHP, Prestashop, Shopping Carts, Website Design
Hire jpslopes
Project posted by:
jpslopes Portugal
Public Clarification Board
Bids are hidden by the project creator. Log in as the employer to view bids or to bid on this project.
You will not be able to bid on this project if you are not qualified in one of the job categories. To see your qualifications click here.

$ 412
in 10 days
$ 228
in 5 days
$ 222
in 5 days
$ 250
in 5 days
$ 221
in 12 days
Hire techwelf
$ 248
in 12 days
$ 252
in 3 days
$ 198
in 5 days
$ 206
in 10 days
$ 222
in 5 days