Search for your current exp using U32, kill something, next search until you find it, then change it to 3,520,485,253, save, reload, kill anything, profit, you are now level 99
For max level search for current exp, change to 3,520,485,253, save and reload, kill any monster, profit lv99
Now you can one shot anyone with high level weapons
Yes
Yes, the max amount of money you can have on you is 990,000, the max amount in your safe box is 2,500,000 as long as you don't exceed that you will be fine