First for the sporter in this game which is not made to solo in FC. Its there to party up with guild mates or friends to support in killing bosses and chests. Then we can know that RG hunter who is made purely to heavily bully the mobs in FC level 2. So you can get them to drop the Refining Gem in Tales Of Pirates II. There drop rate is 0.08% so you will have to kill a lot of mobs to get one (even with an charmed berry).
Then for Chester. which made for only a single task. You can kill the maze Chests as fast as possible. Its really fun to do because you can do this very fast and smooth if you are trained well enough in Hit and Run and stealth Slash stealth combos. And crusaders are the only class that take so much effort in planning. And since we stop leveling at level 45 it only gets a lot worse. At levle 45 you will have exactly 64 stat and 36 Skill points to play with.
At last for equipment. Well as pre-mentioned we stop leveling(top II gold) at level 45 the equipment you CAN pick is heavily reduced. You can choose sword which is short easy. Dual Blade Of Incantation ( the lvl 45 unseal blades), A total of 14% aspd and 4 str and it will be very hard to find anything better for that level. So you can start off you can pick a level 40 chest sword and the one you get at level 45 from your newbie box.