Okay phew! Thanks for your response! I did it a bit a different way where I booked the visa interview prior to receiving packet 3 or 4 (even though it says not to, but thought id give it a shot). So my packet 4 from the embassy was slightly different than the usual probably because I had already booked and in the email, they provided me with my interview date. I just started freaking out when I saw the ds-260 request as it didn't mention anything about the ds-160 or letters of intent to marry within 90days and such. However when I did packet 3 that was all on my checklist...