Room lighting using LED strips only
Most architectural designers recommend a mix of lighting types (ambient, task, accent) to give a room balance. You should research design ideas. 

I would think that your LED strips would be used for ambient lighting, and as such there are some standards to follow regarding minimum lumens for a particular room type (like, 20 lumens per square foot). Since you already have specific strips in mind, calculate total lumens needed and design your strip layout to meet that. Then you can add accent and task lighting depending on room function and layout.