100 Million at level 15

So maybe I got extremely lucky or this happens a lot on this server, I honestly don't know. On my first day of playing this game, I think within the first couple hours, I farmed my first gacha coupon, headed straight to Kerning City's Gachapon and landed a 60% Chaos Scroll

At first I didn't really know what I had, and got a bunch of offers for it. All between 5-10 mill. I'm dumb asf... So I almost took it . Some kind players let me know it's worth so I went straight to the Cash Shop and bought a Hired Merchant to sell it. I sold it for 5-10M under market value because I wanted to get a return as quick as possible and sold it for 115M.

Admittedly this isn't the account I originally jackpotted on, but since then I learned a lot about HP washing, Meso making, mule accounts etc. so I made this account as a reserve for an HP washed NL and I'm currently saving up on Vote Cash to start HP washing this character.

I guess my question to anyone reading this, what would you do with 100M right off the bat? Maybe buy and flip a bunch of underpriced items from the Free Market for a profit? Maybe purchase some INT equips for my NL and start lvl'ing him up? Or something else. I honestly don't know the best route to take and I'm trying to be as efficient with it as possible. What should I do? Thank you for your suggestions