If you are finding it hard to get access to local users of the community, you would have to resort to paid options online. Some websites that offer user testing are: http://usertesting.com/ https://www.testingtime.com/ http://www.trymyui.com/ http://www.userlytics.com/ https://validately.com/

If your team is releasing updates constantly & there are edits to the list of features to do, Kanban would be the way to go. AGILE is best when everything is defined and would not change. I work in a company that worked on AGILE. But the nature of our team's work would constantly have numerous changes by the client mid-sprint. So, we shifted to Kanban