I think I was almost doing that at one point. Years ago a few of us watched through the whole series up to that point in 3-5 episode chunks per week, and after we'd caught up to Japan we wanted to get a few other people hooked, so we wound up going through it a second time while simultaneously watching the premiere episode every week. At some point in there I was also watching my DVDs and/or FUNi's streams to hear the dub from the beginning. And I started the whole thing out when OG Toonami started airing FUNi's edited dub episodes of Jaya/Skypeia, and then finished out that arc with rips from CN Australia, which continued on from where our version left off (and strangely became less edited as the episodes passed). Then you obviously throw on watching the current Toonami premieres. So yeah...when a franchise is this goddamn huge, it gets messy.
Come to think of it, the only part I never managed to see dubbed was that fun G8 filler arc after Skypeia. At some point I still want to dig out my DVDs and go through the whole Sky Island Saga uncut, just to have everything rounded out.