Refining the site is required

The site on OpenCart has a module like an example, and there is a abandoned unfinished Russian site on OpenCart, the first thing to do.
Or you like to install the module so that everything works in Russian.
Then start to adjust it to the necessary requirements.
Basic but not all tasks.
1. Payment acceptance module (as much as possible) at least Robocast and Paypal
2. Post delivery modules Express type Pony
3. The basket must count the gross weight of the ordered
4. The site should be in two currencies, and where all prices are prescribed in the goods in the UE but the site was displayed and calculated in rubles from the rate at that time.
5. There are three kinds of buyers.
First retail customers for them the prices are standard
Second retail customers with discounted cumulative
The third is dealers for them prices on the site should already be wholesale.
6. The site should be connected to the SMS newsletter and it should work for customers.
7. Banner advertising is recommended with this product to buy. The latest incomings, manufacturers, brands – all of this should work like everyone else.
8. In the goods when buying the goods, it was possible to increase the number of mice
and that the page immediately shows the amount of the ordered goods.
9. Order history, desired products, or the ability to return and pay for the order in the personal account by cashless or webmoney.
The rest is at work.