i got an ITA in last draw of december 2017. My FBI PCC request has been submitted in same week. I already accepted my invitation and i have all documents available except FBI PCC. I have 40 days left to submit my application. Current processing time for FBI PCC is 14-16 weeks which means i can get it around mid of April. Should i submit my application without FBI PCC now along with FBI PCC request form and Letter of explanation or i should wait until last day of deadline to submit my application?