Whoa, I thought this was a forum for praising gourami, not feeding them to cichilds. Gouramis have personalities but if you want to make sure there is little to no aggression in the tank I have some ideas. Go for a tank 29 gals or bigger. You could try dwarfs, not blue or opaline as they can be very peaceful or extremly aggressive, and most certainly pearls will work.
Another option is the croaking gouramis, or the sparkling gouramis. They could mix with honeys or dwarves and produce a great tank.
Here's what I would try:
29-gal
2 male honey
4-6 female honey
6 croaking gourami
6-8 black ruby barbs
55-gal
3 male honey
8-10 female honey
10 croaking gourami
15-20 black ruby barbs
2-3 pearls
Remeber the secret is calm surface, lots of space, and plenty of plants with gourami!!