You can use this technique. Where the lines cross, you may want to precomp and mask the stroke so you don’t see the wrong part of the line until you’re supposed to.
You can do it with keyframes. You either need to use Hold keyframes or keyframe the text in it’s current position one frame before you make it move. This will cause it to snap instead of move over time.
To move the flare, change the center position in the Effects tab. There should also be a small circle for you to drag in your composition window. You can also attach it to a light and move it that way in 3D space.
I think only the group you’ve selected will appear in the Element 3D interface, but when you save your changes and exit the E3D window, both should appear.
Can you give more info? Export settings, what’s in your sequence, computer specs, etc. A 25 minute export for a 37 minute video actually seems pretty fast.
Very simple. Increase the scale (or use the Motion Tile effect) to stretch the length of your walls. Either delete the back wall or move it back in z space.
Your sequence settings are fine. You are going about the export setting all wrong though. This article will give you a basic understanding of your export options.