At this point, seeing btc below $2k is highly unlikely even in the worst of circumstances. If you remember the 2013-14 peak, it was a clear bubble, where after $1.2k, the price dropped to $300 and stagnated. In this case now, it dropped recently from $6.5k to $5.5k. Going by those trends, there is definitely going to be a correction after the fork. But it is unlikely that it will drop below $2k even in the worst of circumstances. Wait for the correction and pick up at the trough, and when it rises back up, you'll be able to profit.