Am I late for visa slots?

So basically I have been admitted to Santa Clara University and I have received I-20 as well. I have still not submitted my Visa application form as I am still waiting for San jose state university's decision, The University said that they will have a decision by mid May. I am getting anxious about should I wait 3-4 days or go ahead with submitting my visa form and booking visa interview slots.please help me out in this mess.