By this point you should have a pretty good idea of what you’re doing. However, it’s worth pointing out that too many mods can cause problems. Unforeseen conflicts and simply just to much strain on the games engine can produce unwanted results. There is nothing quite as infuriating as wandering through your creation only to have it regularly CTD or refuse to load and/or corrupt save files and so forth.
Ideally you’ll not want to push past 100 installed mods. Becoming carried away with modifications is easily done and at one point I hit 149 total mods which lead to a bit of a nightmare resulting in a few hours un-installing and re-installing mods, re-doing load orders etc until the issue was resolved. I’m currently sat on 110 mods and all is dandy with only a slight frame rate dip here and there. Some mods might look cool, but ultimately you have to question whether or not risking a stable game is worth the hassle – which I can tell you it isn’t. Once you have reached a satisfactory point with how your game looks, feels and plays it’s time to begin choosing your mods more carefully. That additional level of immersion and polish can really bring your Skyrim to life, but don’t over do it!