Here you go AvE knows what hes talking about . Here are series of vids on cordless tools
I work in the trades so here is my opinion . As DIYer you cant go wrong with a cordless system from Bosch ,Milwaukee , Makita ,Dewalt, or Rigid ( I have not used Kobolt so no comment).
Like others have mentioned take them down,add or replace water damaged insulation and add a vapor barrier . then sheet rock and paint also no need to remove the 1"x furring underneath .Also there is no need to prime the ceiling before you paint . Two coats of BM,SW,PPG ceiling paint is all...
I don't know why people keep saying ST is a Socialist Utopia . Picard made one remark about not acquiring wealth and allot of people think the whole ST universe is full blow Commie LOL . Granted the whole ST verse isn't our Libertarian dream it isn't all no work Lesbian basket weaving either .