Could I get into Colgate University?

If you really want to go there, retake the SAT ASAP. You could be admitted on your current very high writing score and on your ACT score, if your stated GPA is unweighted. However, you would be in the bottom quartile of admittees based on the first two parts of your SAT score and entering college with that handicap is usually not too good a path to success. You will probably have a better college experience at a less competitive college. Good luck.