While you can grow out any combination of fry I wouldn't really suggest it. Perhaps Pandas and Angels will do fine together as they are both carnivores, however GBAs are herbivores so really shouldn't be kept with them.
The GBAs you can leave in the tank with their parents, its actually much easier that way. Feed them lettuce leaves that have been soaked in boiling water for a minute, dont boil them, just soak. The Corys you will want to do very regular feeding and water changes for the first 2 weeks, feeding microworms and BBS (others feed Decaps Brine Shrimp Eggs but mine didn't go for it). I haven't bred angels so I cant help you out there, Im sure someone else will point you in the right direction.
Ive heard if you raise Angels in taller tanks they get higher fins so that might be something you could look into.
My 2 cents worth