am617,
I was in your exact same shoes 5 years ago. My lifelong passion is trading, except my job hunting season coincided with 9/11, so there weren't many trading jobs open. GS flew me to nyc twice for a few rounds of interviews, but ultimately their desk was only hiring for 2 positions and I imagine they went to Ivies (I was from a mid-tier). Props were closing up left and right so that wasn't really an option at the time.
I ultimately went with a consulting job for one of the Big Four. Overall I don't regret the decision, it was a great experience, you build a great network, and it opened a lot of doors. The only downside, no matter how removed you are from audit/accounting in the consulting space, in the eyes of any other firm, they see a Big Four on your resume and they instantly equate you with accounting. It's difficult not to get pigeon holed with the stigma of being an accountant, regardless of your title or the "consulting" work you actually performed.
Additionally, I wouldn't recommend going the Big Four route and hoping you can still trade on the side. You will lose focus trying to do both, which is ultimately detrimental to everything. Your internet usage at the firm and clients will be closely watched as well.
2.5 years later, I jumped to a client that offered 100k + full grad school (difficult to pass up at 25..), unfortunately it was the wrong field and the company went south before I could even start applying. Now I'm finally at a hedge fund, though on the ground floor doing backoffice accounting.. A good friend started at that level too and was able to transition to the buy-side (lucky), I imagine I'll need an MBA/MFE/CFA to make a similar leap in today's market. In the end, it would've made more sense to have done this immediately out of college 4 years ago.
Long story short, if trading is indeed your passion, don't do what I did.

Yes the Big Four job is the path of least resistance, good experience on your resume,decent salary, good entry to B-school, etc etc. but when you're sitting in a cube buried in Excel for 12 hours a day (which is 99% of what you'll be doing).. you'll wish you'd have gone prop.