to be honest, the vision cages are nearly too small for all birds. not deep enough (most only 14-15" deep) when i know even budgies should have a minimum of 18" and so do tiels, lovebirds, and many others. not many require smaller. even finches need room to fly in a good sized cage. so i'd say no for a GCC for a vision cage
i do not like the vision cages based on the depth alone mostly as nearly every one of them is too narrow and this sets up for injury for birds if they are prone to panicking or nightfrights.
have you considered a single level Critter Nation? it's a rodent cage, but we got the Ferret Nations (same thing, but bigger bar spacing)
i dont think though the stand comes off :/
this is our tiel's cage (they have the top level of a ferret nation, but shows you the size) this would be the same size as a single critter nation unit
if this helps even more, if you want the full cage, remove the divider in the middle. our chinchillas have a ferret nation too, when my husband cleans their cage he goes inside it since our chins do not like coming out of their cage. he spends time with them in there LOL this is the double unit size