You need to be introduced to the wonderful world of multiple installs. Now that I have a complete clean install in an archive, whenever I want to test something, I just unzip it to a new folder. If I don't like it, I delete the whole folder and try again. No more having to back everything up every time I need to test something big.
You know quite well that I don't have the time to do such stuff of testing other things than those mods on MMH, but eventually I need to learn some day and I want you as my teacher in the future.