A big dick has nothing to do with getting laid. The cock doesn't come out until your going to have sex.
As far as money goes, it is the same thing. You don't go around showing people your bank statement. If you aren't rich, you have to be a "baller on a budget." Or as Katt Williams would put it, "Make pimp decisions."
Men's health did an article that showed it isn't money that attracts certain girls, it is the look of money. If you dress well, and put a little effort into it you will figure it out. Other people can't tell you how to get girls. Every guy has a different way of picking girls up, and every girl is different. Confidence is the most important things to remember.