Hi there, I'm a UK based WordPress expert, please see my reviews for my experience.
I'm interested in working with you on this project.
I can import all data onto my development server, update to the latest WordPress version and transfer back to your server.
When you say you have a few PHP scripts, could you be more specific? Do you mean WordPress plugins? If so, please provide a list of active plugins.
If you have any questions feel free to ask. I look forward to working with you.
Kind regards, Simon