If there are fish you don't like then see if the store will take them back. 3 less tetras is a start. I would also suggest that you stick to one loach type and get more. The khulies will do fine in that temp of water as long as you are doing decent sized weekly changes. Loaches are schoolers as well and will be much more active fish if their group number is increased.
How big are the angels? When smaller they won't eat the neons but have the potential to as they age. Add places to hide such as live plants to minimize the chances of them being caught.
And not to pick on you but I assume the 4 mountain fish are actually White Cloud Mountain minnows? If so they to are a schooling fish and get far too large to live in a 3 gallon tank. Mine are easily 2 inches long and fast swimmers.
How big are the angels? When smaller they won't eat the neons but have the potential to as they age. Add places to hide such as live plants to minimize the chances of them being caught.
And not to pick on you but I assume the 4 mountain fish are actually White Cloud Mountain minnows? If so they to are a schooling fish and get far too large to live in a 3 gallon tank. Mine are easily 2 inches long and fast swimmers.