CKAN to DKAN

I have a Linux based CKAN Website that must be migrated to Linux based DKAN site

Question:

In general, which is the best and most effective Drupal technology to use ?

Is it…

a) The Migration Tools
b) Open Data Schema Map (needs to have a CKAN to DKAN map created)

Or other ? If so, what ?

Thanks,

Drupal version: 


Source: https://www.drupal.org/taxonomy/term/37/feed