Yes, you should always have the chi for the top priority abilities. Its absolutely possible, just have to think ahead and know when to wait and not cast anything.
The amount of (bad) luck with BoK procs you'd need to make SCK usable in single target is huge, more than will ever happen. I've bolded the part of this that makes what you're saying incorrect. If you're low on energy, you can wait 8-10s or so before worrying about capping energy, in that time RSK will almost definitely become available again, so you dont need to just throw away Chi with SCK.
If you were using CJL, you were messing up, whether consciously trying to use it, or using it to make up for a previous mistake. You're more than welcome to continue to use it to make up for mistakes, and you definitely should do so, if it means the only resources you "waste" is 20 energy for CJL, its still usable. The "nerf" just made it more punishing to use it as a crutch, didnt change its role as a crutch.