Best way to get income is broadcasting.
Go to work a couple of days, save enough for athe item that allows you to fuck for many hours.
Broadcast for hours, increase subs and in about 2 or 3 ingame weeks, you should have a healthy amount of cash.
Keep it up, and by 80th day, u'll have some nice 50 to 100 millions.
From then on, you can invest or do whatever.