I have openbox on my laptop, which does have power, but why not use OB anyways? I love it based on how it looks with a nice theme. If you do not use some good themes it can look ugly AF, though. I have tried the usual settings from November 2018 and changed nothing great. I would argue it is the best distribution if you want to try OB.
Personally I do not have any good knowledge of OB, but the standard configs did the trick. Some stuff is a bit unpolished, but nothing too bad. So for example the computer does not automatically lock, when the lid is closed. I have to do that manually. I have not looked very into changing that. Also the display usually gets a bit less bright, when there is not input for a few minutes. Happens on YouTube as well, f. e. The screen does not go full black, however.
It is indeed very lightweight. All in all, it is a fun distro. The full disk encryption does work pretty well, I also have btrfs backups which I did not need yet. Seems pretty stable. I had only had a problem once in the half year since I started using the distribution.
Oh, and it is arch. So try to keep an eye onto the arch wiki. Btw, if you are using Duckduckgo: You can use a bang, a short string for the site you are searching on and a search term. If that search term is found, you get redirected to the website immediately, if it is not found, it used the search option of that wanted website and redirects you to that. So for example, if you want to search in the arch wiki you can use