If you aren't ready to battle against the hardest content in the game, then YouTube it. You really have no argument there. As for now, that is your only other option. Unfortunately Alexander will come with an Easy mode so you're SoL till then.

As for your Relic weapon, if you aren't prepared to put that much time in it, then obtain some of the lesser valued items. 2.2 Allagan weapons (UAT); Ramuh or Shiva weapons. Yes, the relic weapon is better, but that's because time pays off and it should stay that way. Why do you need the weapon anyways?

If Crafting items didn't take a bunch of mats to make, then there would be no economy.