Steal anything I can fence, cash when I need it, invisibly witness people using their bank/financial details and siphon funds, convert them to bitcoin, trade it between dummy accounts and if possible use it to purchase physical assets which I can collect without personal details and then exchange them for legitimate currency.
If successful crime is difficult (petty cash isn't much and anything electronic I may well get nailed for anyway) I can consider a career in incredibly intrusive journalism, blackmail celebrities with taped recordings, or consider hiring myself out as a hitman.
Again, there's the chances of being investigated by some other trail than visual witnesses or recordings, so there's other backups, like hiding out in the offices of corporations, listening in for events that would affect stock prices, and invest/short-sell accordingly.
There's a lot of ways I could profit from invisibility given time to really think about it, I'm sure. Once I'm rich, money can buy me anything petty that invisibility could have gotten me.
The arousal thing really wouldn't be a problem for me. If, inconceivably, it were, local anaesthetics in the genital area will suffice during operations.
What is your dream vehicle of choice if you could have any currently in existence? (you don't have to limit yourself to cars if you don't want to, and for the purposes of the question assume refueling and servicing is free)