You are not old yet. As long as you manage to apply for the match within 5 years after graduation you should have as much chance as any other IMG (after that chances fall to almost zero and it requires a lot more politics to get interviews). That said, being a foreigner, you should aim at getting high grades on Step 1 as this will increase your chances considerably. Step 1 is the most important thing for the match. Having good recommendation letters/good written and spoken english/good publications doesn't hurt as well.