Stop trying to play with my head, 005! It works like this: I'd travel to 1961 and invest the money, then after all my Audrey Hepburn wooing and Anne Frank saving shenanigans are over, I'd travel back to 2011 mere seconds after CP3S departs to go invest the money in 1961 and embark on his Audrey Hepburn wooing and Anne Frank saving shenanigans. I'll be able to go straight to the bank and cash in my investments from 1961 and use some of that money to pay off the loan I took to pay videobob for the time traveling Delorean.

See? Everything works perfectly.