2) No, becouse there is no option to order "use best armor" ; "remove armor". Just like with drugs and stims, slaves will ignore those.3) Good question. You have basic 3 AP punch as single attack with mega power fist so no palm and pearcing strikes and kicks. The question is does 15% critchance from haymaker goes into account with power unarmed weapons.
Dissassembling is easy: use Science on a weapon or armor to turn it into partly into its base materials. Higher science increases the turnout, as well as having a Tool or Supertool in your active hand slot. Higher than 130% is ideal to me, much higher. The tools wear out after so many uses doing this, too, so be prepared to make a pile of them if you plan on doing this alot, they can go quick.