Top B-School my best option?

After graduating from a non-target state school in 2007, I joined a leadership program for a well known non-financials corporation. Typical corporate accounting responsibilities like budgeting/forecasting, FSA, variance analysis, etc. Ideally, I would like to get into equity research but am open to other options. I took an investment banking modeling class, which I enjoyed and enrolled in CFA program but want to be realistic with my options. Will this be a hard switch, especially in this economy? Would taking the GMAT and going to top full time program be my best bet?

Any insight would be appreciated.