If you haven't already, try completing all the optional quests. This will get you lots of upgrades to the Canteen and lots of Specialized Equipment. After the Story, you'll want to do the same kind of progression that you did before, but in High Rank. First the easier monsters in the Forest, then the Wastes, etc, getting armor with higher Defense all the way. Once you have higher Defense and have begun to tailor your Skills, you can take on more Elder Dragons. Once you supplement your builds with Elder Dragon armor and some more Decorations, then you can do the same all over again with Tempered monsters to really start hauling in Decorations. After that its on to Arch-Tempered Elder Dragons.