Smaller so-called peaceful cichlids like the Rams and kribs do best in a tank when there is ample hiding spots to claim as their territory. These type of peaceful cichlids will/can wreak havoc on community type fish while defending it so extra space is needed. I would suggest at least a 50G tank with plenty or places for them to stake out as their own. If going with either rams or both, the honey gourami is fine to. You can not mix dwarf and full size gourami's though. Just like you can not mix the honey with the moonlight. One Krib can be added with either the rams or the gourami as well, just as long as its only one Krib. While mating Kribs can be very aggressive and may hurt the gourami. Rams can do fine with pairs, singles, or more.