i'm interested in getting the namazu mount but i've never done any crafting or gathering in the game, i'm also faily new (only done MSQ and group pve content) so i don't have acces to all of the exp optimization methods available

can anyone give me a rough estimate of how many hours it would take to level a gathering job to 64 so i can unlock the tribe quests? knowing which job is easier/more beneficial to level would also be helpful