After some months with a bad copy of FFX (it glitches rightin the beginning), I got myself an International one. But since I didn't play since ages ago, I didn't get the Cloister of Trails trasure of Besaid, didn't get some Al Bhed Primers, and I got NO Sphere for Bushido AT ALL. And I'm almost on Spherimorph.

Is it worth to restart or I can just wait for the airship and catch those Primers and Spheres? And what about Besaid? AFAIK you need to beat Dark Valefor to go in, after the Airship..