The easy way to figure a log drop is to take 1 zero off your viral load, in your case the 1,600,000 would be 160,000 for 1
log drop. A two
log drop would be 16,000 and a 3
log drop would be 1,600. so in your case you had better then a 2 log drop and close to 3.
Yes being und at week 8 would be ideal, but there are many that is not, keep your fingers crossed as you still have time......