What's your GPA like? The 161 you referenced for St John's is for their FT day program, not their PT evening program. I believe their 25/75 is closer to a 155/157 for the evening program, so your 159 should be fine. Of course, a 161 will/should get you some money, whereas the 159 may not. I didn't apply to St John's until late January, recieved my acceptance in mid-March. I'm not sure what it's like waiting until March to apply.
Good Luck,
Rob