Go for 20life.
Dual dream costs lots of str & dex for max block, so flat life is damn nice.
Plus: outgoing dmg will not be your problem.
Imho I would not go as dual dreamer vs ubers. use bear sorc and classic melee gear, that'll do.
Check out my sorc wt (images work from page 50ish on, didn't know about temp accounts back in the day -.-):
https://forums.d2jsp.org/topic.php?t=71647661&f=161&o=1030