Once those two are figured, then that should help. There are many "demo days" events during the summer where you can go hit many different companies' offerings. Do that. Also, try demoing many drivers and shafts. I found that I didn't like certain drivers but it was the shaft that was the problem.
Also, check the used department. Let some poor hack eat up the depreciation on his $400 driver and pick a lightly used one up for $129!