OpenCart Coder need

I need to code two open cart modules.
Please, pm

1 module - payment module (swreg) with express payment mode
2 module - adjustable discount calculator

adjustable discount calculator explanation

I would like to rewrite autodiscount module. Autodiscount string should appear only if we added two or more items in basket. If basket is empty, under basket should appear text: “Add more than 1 item and receive extra discount”



If we’ve added two or more items, should appear text:
Discount and percent



How to calculate discount (should be adjustable)
2 items any sum – 7%
$500- 800 - 10%
801- 1000 – 12%
1000 -2000 -15%
2000 and higher – 17%



Please, provide me with your price and coding time.

and I need swreg payment fully opencart integrated modile too.

does swreg have integration documentation? I had a quick look on their site and didn't see any, but they don't give you much access if you don't have an account.