What you want to acieve is very difficoult, a first step may be go trough options and in the last tab try deactivate the plugins you don't consider essential and see what happen.
for the mods can be even worse, a good solution could be what
bwebrwkerw suggested 2 pages back, start installing an old version and add up what you need from the latest one.
Needless to say it takes a lot of time and "try and fails"
Only consider that most of the mods are for character creation, so not having/exclude them will cause many errors