I need to move http://artunframed.com/Gallery to the root

I need to move http://artunframed.com/Gallery to the root at http://artunframed.com (as I installed wp in a separate folder)

I don't want to lose my link juice for the old urls.

What's the best way to do this? There are a lot of different methods online eg http://wp.smashingmagazine.com/2013/04/08/moving-wordpress-website/

Rather than writing individual 301's, could I move the new wp site to the root directory and add the following to the htaccess file :

# This allows you to redirect your entire website to any other domain Redirect 301 / http://artunframed.com/