Spell tracing gear adds a good amount of stat, getting gear to 10 stars costs less than 30 mil each, and gives about 25 stat each. Link skills/ legion incentivizes creating all the different classes and raising them up to at least 120 in order to power up your main with the legion bonuses/link sklls. Most new bosses including ra have elemental resistance, so for all intents and purposes everyone deals halved damage to them no matter what.
If you want to scroll your gear but don't have a lot of spell traces, get a level 120 item eg hat, spell trace with 100% and star force it 2 times, then press the blue hammer icon in the inventory (transfer hammer). Now, if you put a level 130 hat in the right side box, you will be able to transfer the potential over, star force stars minus one and the remaining slots will be filled in with 100% spell traces of your choice. Repeat with your 140 and 150 items as neccessary
Honestly though, it would probably be much faster to start again in Reboot if thats your highest level. Much easier to gain damage over there, and there are many people who can help with bosses/etc.
