I leveled BST as my first job to about 65, made 10s of millions of gil with it, it's better at farming mass amounts of EPs than my 72 Samurai was, etc

But if you wanna defeat the purpose of this server as being a place where you play the game like back in the day you can just cheese dual box like all the other manchildren who originally failed at being successful in OG retail and are now living the life by exploiting technicalities that are glitches/unenforced on Nasomi. If you do this, other jobs are probably more effective than BST