Yeah, you'll have to do the hunt a great jaggi quest if you want jaggi armor. When you do bear in mind you get an extra reward item if you damage the head during the fight (do enough damage to it that chips fly off and it changes appearance.) Also bear in mind that if you capture it instead of killing it extra items show up in the rewards for that, which will be different rates for different items than the carves would be.
Cutting the tail off and carving it is always a good idea when possible. It gives you an extra carve and usually has a good chance of giving you rare materials. Other than that where you carve isn't important.
Just make sure you break the monsters other various parts, like the head, wings, and chest where they apply .
Pokemon W: (Knight) 3825 7871 9422 "Keep that bandwagon rollin' because I won't be getting on."