Hi,
I am Mamdouh, a WordPress consultant from Egypt.
I've been working with WordPress since 2008 and have worked on hundreds of sites.
My approach to your project would be to try and troubleshoot your errors and see if I can repair WordPress for you, if not then I will create a fresh install and copy all your posts, pages, images, etc.. to the new install with minimal down time.
Look forward to hear back from you if you have any questions.
Best regards,
Mamdouh