Starting Xenosaga 1 what do I need to know
So I am starting Xenosaga 1. I have beaten it once before when PS2 was new and dinosaurs roamed the earth. I remember the game is cutscenes for the start. I am also about 5 hours in and the battles are harder then I remembered (I have not lost yet but it is certainly non trivial). Do I need to know about certain things or will basic exploring get me what I need?
Also I read that going all in on a single ranged tech is the way to go. Is that true or should I have 2 or 3 techs leveled? I am cool with having say shion focus support spells and beaming people with spell ray if that is optimal. I also heard ether defense is the best stat, is this correct?