Guys since I finished the main questline and very little of others, should I continue on with as many questlines as possible during and after my getting a legendary set of Daedric gear and greatsword with all of it enchanted as best as I can with my 43 enchanting? If so, which questlines are reccomended?

Edit 1: I plan to do "Down with the Brotherhood!" since I sided with the Legion in the Civil War. Only makes sense to take them down, despite how tempting Shadowmere and all the gold is.