Deployment strategy for Office 365 SharePoint 2013 stuff

A SharePoint 2013 office 365 development site has following items in it which needs to be migrated to the office 365 UAT environments.

  OOB CSWP (Search w/p)
  Newsfeed w/p.
  Blog w/p
  Lots of Java script files

N.B. All are server side web parts only

Now, what should be correct strategy and planning to migrate these elements to the UAT environment? Is site template is sufficient to migrate this?