If you want the nostalgia of running the original updates for a couple hours or plugging in a new card for the first time that's definitely the best way to get it. If you just want to get the final version on a machine then installing from an already slipstreamed installer image like in the article is probably the way to go, significantly faster and doesn't require any bootstrapping of getting the install "good enough" to be able to run the updates in the first place.