would it be possible to find a commodities trading position in t

If you have the right background and can find a position in a commodities tradings firm or a commodities hedge fund (even starting as a trading assistant), that could be a highly exciting and lucrative job. 

if you want to go back to school, you can always take out a student loan, so money is not really an issue. But is going to law school truly what you want? it seems to be a bit different from what you have been doing.