Looking back, I just realized not only is there only 4 stars for Emerald, but it's filling the Hoenn pokedex for the star rather than all 350? available.
While that's 200ish, not all of them need to be glitched through. The ones that do seem to be:
http://bulbapedia.bulbagarden.net/wiki/Pok%C3%A9mon_Emerald_Version#Missing_Pok.C3.A9mon
And the other starters/Lati@s. I'm not sure of 2 things:
1. How different would the route be
2. Given that you need time to setup the glitch, would it be faster to catch certain pokemon instead of mass register them at the pokedex?
Btw, is it possible to use the Pomeg glitch to glitch a pokemon's max HP into always 0, for easier Pomeg glitching later on?
Edit: Also, since you don't need to actually own the pokemon, just have it as "caught", are all the flags for that nearby and accessible with Pomeg glitching? That would save a lot of time, and make a 4 star run more...."feasible"?