There are some smaller liberal arts schools that you should consider and COA of $45K will put them into play. Lafayette, Middlebury, Babson, Lehigh all send a decent number of kids to Wall Street. When you say Wall St, are you thinking about traditional IB jobs or more jobs related to finance/banking?
Then there are OOS public ivies that you can look at. I am thinking UVA and UNC in particular. None of these are easy admits. Some one suggested Fordham but Northeastern should be in play too.