Hi there!
Well, depens on what kind of repairs you want to do! Are you planning to do micro soldering? If yes, you do need a work bench, but also a heat gun and a nice soldering station.
First things first, a nice start is to have the iFixit Pro Tech toolkit. This one will help you a lot for opening a lot of game consoles.
Please let us know what kind of repairs you have in mind! Thanks!