What this means for your plans
The launch game is two continents and two job advancements. That is not a cut-down version of the 2000s game so much as a snapshot of its first year, before Orbis opened. Progression tops out around the Victoria Island level 50 to 80 areas, the party quests, the six bosses and the Free Market economy. If you remember the pre-Big Bang client as "get to third job and go to El Nath", the first months of Classic World end a chapter earlier.
In practice that shifts the early meta toward second-job builds that are strong on their own, toward the training spots that are efficient without higher-tier skills, and toward the six bosses as the shared endgame. Our class pages are written for exactly that scope.