Edit a premium Wordpress theme which is likely to involve custom coding

General information for the website: Confidential
Kind of development: Customization of existing website
Description of requirements/features: I am looking to have a premium WP theme edited to work exactly how I want it to look which will involve custom coding.

I am very much a hands-on person so will need somebody to work with me over Skype chat to make the changes for each individual section of the website rather than me just saying what I want doing and letting the developer get on with it without my input at each stage.

I am looking for developers in the UK who can work after 5pm weekdays and weekends, or developers in North America due to the time zone. Please do not bid on this project if you are East of UK (ie. india) because the time zones do not work for me.

I am likely to need a diehard coder for this project so if you are only able to make basic Wordpress changes, please do not bid on this project

I am looking to get this project completed within 2 weeks so I am looking for somebody committed. I cannot be too open about the project at this time as it is commercially sensitive.
Specific technologies required: PHP, Wordpress, CSS, Plugins, Widgets
Extra notes: