I'm completely on the contrary. I've played part one for around 500h and and only in sandbox. That said I've heard good things about the management of planet zoo, so hopefully your management desires can also be fulfilled.
Planet coaster is definitely the best for sandbox and customizing things. If you want to build a beautiful park and themed rides there's nothing like it. Meanwhile Parkitect scratches the management/business side itch, I just need these devs to get together and combine their strengths haha.
I didn't play any planet zoo, that's promising to hear maybe we'll get some improvements with this too.
Take my compliment with a grain of salt since I think a lot of the management included caring for the animal needs which is something that's completely gone in planet coaster. But at least the steam page mentions more needs of guest like shade from the sun or lifeguards near pools.