the Biorb is essentially an overpriced fishbowl with a junky UGF
. You could piece together something nicer for less money, or just use a large fishbowl with a sponge filter. JMO.
Agree that the list you were given is not likely to work out in the long term, especially not in a 60L. Also, I would caution you on keeping WCMM with galaxy rasbora/celestial pearl danio. IMO
the WCMM are much too boisterous to be kept with the galaxys, and will almost certainly outcompete them for food. Same goes for the black neons. The betta should work, but some are more aggressive than others and may harass other fish.
If you want to stock tiny fish like galaxys, you should probably stick with just tiny fish.