I really hate this part too and can be lazy about it and open when I have time or really need to do it…
I use Winrar but I don't know how to open several at the same time, so I do it one by one and it makes me crazy. lol.
After I reunite all in one folder, choose the main image I rename "folder" and the rename the entire folder with the name of the kit for example. It takes me so much time and really annoy me so I admit, I discover better the kit when it comes to use it.
I'm going to see your 7zip, it really interest me!
