Oscommerce bitcoin payment option

General information for the website: oscommerce site with bitcoin as a checkout payment option.

Description of requirements/features: I have had my time wasted too many times on PPH by coders promising so much yet delivering next to nothing, so please do not bid unless you have extensive oscommerce experience.

You have to modify existing oscommerce bitcoin contributions and github files to make an oscommerce real-time checkout process using APi etc:

https://github.com/weex/oscommerce-bitcoin
http://addons.oscommerce.com/info/8170

You have to upload the latest oscommerce version (2.3.3.4) to your own host/server and make all necessary modifications.

At the latest, I would like to have a working and complete demo store by day 4 of you being selected.

The job description states $50 but if you complete the project bug free you get a bonus payment:

If complete on day one of being selected you will get another $30

If complete on day two of being selected you will get another $20

If complete on day three of being selected you will get another $10

The job must be completed by day four of you being selected.

Thanks
Extra notes:

Lots of extra work available. I am looking for a long term programmer and this job is to test to see your skills.