Bitcoin Cash is going much higher. Current rise is only a necessary preparation - it's major function is to make third-party miners interested and entice them to technically become ready to switch mining power. There may be a correction - treat it as an opportunity.
Key dates:
~tomorrow - Bitcoin Cash difficulty adjustment, should make it even more profitable to mine
~4 days: Bitcoin Core difficulty adjustment
That's when the hash power starts to flip, leaving bitcoin core with ~2000 blocks till adjustment. That's also when the REAL pump starts - with parity as target. Mining profitability difference goes ballistic, 10x+ more for bitcoin cash. Loaded big blockers (especially Roger Ver and Jihan) start dumping hundreds of thousands of BTC for BCC.
More and more miners leave the Bitcoin Core chain, enticed by much higher profits, which causes widespread panic and enormous transaction backlog.
As BTC drops and BCH rises mining BTC starts to become not only less profitable, but a losing endeavor. This causes even more miners to switch, which results in even less blocks - at best, one per hour, equivalent to limiting the block size to 166kB.
Once Bitcoin Cash is worth more than Bitcoin Core, while having much more hash power, the game is won. Media all over the world herald the news. Major companies, like Bitpay and Coinbase, scramble to add BCH as fast as possible.
This is the final catalyst for the last dump of BTC - those on the exchanges anyway. Remaining miners mining at a significant loss lose any hope of being able to sell their rewards in a reasonable period of time - as mining rewards can only be spent after 100 blocks. Even they leave.
Core chain dies. Bitcoin Cash becomes just 'Bitcoin', but with 8MB blocks. Corecoins remaining on the exchanges are worthless - as there's no chain to withdraw them to.
Some time after that, Core starts their own hardforked chain with a different POW, 1MB+Segwit. Nobody cares. Mined mostly by LukeJr in his shed.