Bitcoin Cash will rise to 5k even 10k maybe but it won't be able to follow Bitcoin all the way especially with Lightning already in beta the days of BCH is limited I'd say
BCH provides no benefits over BTC except for a short time benefit of 8mb block size which even I can do XD
Its all marketing pump and dump which will fade out as BTC grows with its development
so my recommendation is take your profit when you can and get out of it