First of all, it is called Honey Gourami.
Secondly, tanks do not need to be established for mystery snails. Word of advice for mystery snails. There is a good chance you might get a male/female. If you do, they will mate. If they mate, the female has to go out of the water to lay her clutch of eggs. Mine did this and fell out of the tank, hitting her shell on the stand and broke it. They are ver adventurous and will climb out of the tank because they can. Fun snails to have though.
Third, you do not want two Honey Gouramis, or two of any Gourami alone. You need three females to every male. Two males will fight to the death in your tank. One male and one female, the male will chase the female to death. I have been both situations happen before. This is why I only have one male Honey Gourami in my tank. Otherwise, very peaceful and playful.
It is strongly recommended to cycle your tank before you place any fish in it. If you do not know what "cycling" means, look it up online or on this forum. If you don't, many fish will die in your tank. I hop this helps!