After watching your video on your model, I made one similar to what you have. I couldn't sleep tonight, so between this and the tutorial series, I have been working all night. Not on this one model though. Took about 15 mins to get all the textures and model it. Took another 15-20mins to unwrap it.
When you are making simple models like what you made in the video, you can do what I call face unwrap. Basically, I select the faces I know will have the same texture and seperate them on the texture. That simple. When you get to more complex models that is when you want to really take your time. You can have the best model and texture, but if the uv map is off it makes it look bad. A more trained eye can see even my flaws in what I have done here.
So enjoy!