Octave tracking is very good, generally digital means better tracking than analogue. The synths/organs are decent, if they are right for you I clearly cannot say.
For my personal taste the Future Impact has the upper hand, so I kept it on my board. Same with the COG Octaver and the dirt pedals I kept, could the HX replace them? Yes. But sounds and settings are personal, for my taste some pedals were simply a better fit and I kept (and will keep) them. Others (B7K e.g,) had a direct HX alternative or I found a comparable sim (chorus e.g.).
Almost convinced the Keeley can be taken off too.