A dwarf Gourami will not eat any neons. Try 5 neons, 1 Dwarf Gourami and 4 Corys.
Do not add all these to a new tank however as I would be surprised if any survived. Add one species at a time over a matter of about a month and i think you will be fine. By my calculations it is then set to 1 an a half inches per gal so you are also going to need to keep on top of water changes and have a good filter.