Setting up theme like demo could be troublesome. I would help you setup theme exactly like theme demo with dummy content. i will do this whole job in just 5$, no extra charges just basic 5$ charges for whole job,
You will have to replace/remove dummy content yourself.
What i will need from you:
2) Domain or Hosting access OR wp-admin access
3) cpanel Access
4) complete package of theme you received in theme purchase. If theme package is too big to upload here, you can upload it to dropbox and share download link.
i can make theme like its demo for all themes from
and themes from any company
i will do this within 3 hours when you'll give all necessary informations: login, theme, etc