Great tent- but for specific conditions.
Because of the lightweight materials, the Firstlight works best for quick assaults on the steep stuff. It works best in cold and snow since the rain tends to soak the materials. If you are camping in the Sierras for a few weeks it could work, but in the Pacific Northwest or wetter climates, you may get more than damp inside. Also, for expeditions the design could benefit from a few more guy points- which I had custom sewn into mine. Although it will withstand surprisingly high winds (see image) for its weight, a much stronger tent would be the BD Bibler types- like the I-Tent or even Fitzroy. Plus, the Bibler single wall materials seem to breathe much better- so, in my opinion are worth the extra weight. Overall- You might find the disadvantages of size and performance are not worth the advantage of lighter weight.