I've been playing the Smith-Morra Gambit (e4 c5 d4 cxd4 c3) against the Sicilian defense for about 2 years. I have a tournament coming up in 3 days and I am beginning to doubt if the Smith-Morra would suffice. I like attacks and do not enjoy slow maneuvering play (which is why I do not play queen's pawn). Is there any reason I should change my response to the Sicilian? It seems like 3 days is not enough time to learn the thousands of variations in the Sicilian. And even I understand good play by black means that I am down a pawn for good.
FYI, I have an FIDE rating of 1398 and it seems to me that my opponents will be rated average of 1600.