Hi,
I customized a magento site, where admin could set payment in category level , I could provide the same solution.
Please have a look http://www.freelancer.com/u/webdev244.html feedback.
I am an experienced magento developer of more than 5 years of experience only on magento, total 9 years of experience on web development, php, mysql, jquery, wordpress, drupal & shopify, can surly do it!
Looking for a long-term relationship!
Thanks!
Kind regards,
Samser