If you want to do video, then use either Premiere Elements or Premiere Pro CC, not Photoshop.
Download the trial and see which you prefer.
Keep in mind, however, Premiere Pro requires a much more powerful computer than Premiere Elements.
Go here and scroll down:
What are your system specs and hard drive setup?
I’m not sure there is anything to be gained in using Photoshop CC unless you are also linking to some of the other creative cloud apps such as Premiere Pro and After Effects.
Photoshop/Premiere Elements is a good cost effective combo and both apps share the same organizer which can streamline workflow.
At this time, I am not going to make a case for either Photoshop CC or Premiere Elements for your video editing.
Please take a look at video editing workflow with Photoshop CC detailed by Terry White.
Does that sound like that will work for you?
Your choice is going to depend on your computer environment and video editing goals and budget. When you want to get into Premiere Elements in depth, we can do that next. But, consider if you really want to make the comparison between Photoshop CC (video) and Premiere Pro CC (if so, listen to the comments of Terry White on that subject in the video tutorial above).