I'm guessing from OP's post that he's looking to do L.A. on the cheap. I have some ideas, but I'm a slow typist- to list them all here I'd want a generous LDU fee.
There's not much that I can add to what others have said about the clubs. I can say that car is a must for your ambitions. Avoid hotels near LAX on Century, as many charge $15/day and up to park there. There's no hotels in COI, you'd need to go several fwy exits away, if COI seems like your thing. Finally, the lower/mid-tier hotels (Holiday Inns, (dis)Comfort Inns, Days Inn, etc have free high speed internet, so you can jack off to porn if you run out of cash, or have a bad club visit.