What actually is Motion 5, am I using it correctly to do what I want?

Im am new to motion 5, and im trying to work out how it fits in with what im wanting to do.

Basically im wanting to create a 3-4 minute product video/demo. But I want all the fancy typography and cool effects you can do in motion. But im not sure how motion fits in with creating a sequence over 3-4-5 minutes?

Should I be splitting every little scene up and then moving them into final cut? How should i get them into final cut? Export as movies? Save as generators? Should i be using something else like Flash CS6? I dont want to jump too far in if I have the general idea about what motion can be used for totally wrong.

HELP!

If most of the work is motion graphics, compositing, etc, do it all in Motion.
If it is mostly editing and media management, do it in FCPX.
There's no right way, except what works for you.