68L (18G) Tank Kribensis pair with Rosy Barbs?

I have a 2 foot 68L (18G) tank with 6 white cloud minnows, 4 rosy barbs and 4 guppies in it, i'm thinking about selling/giving away the guppies and white clouds, but would the rosy barbs be ok with the Kribensis pair? I have a pot as a cave and many rocks as caves for the kribensis pair. Not too sure about where/how to get rid of my other fish either. Also would 2-3 small bristlenose catfish be ok with them? (when I say small i mean about 1.5cm-2cm) Because I know someone who can give me a few of them. If the kribensis pair isnt a good idea then what are any other cichlids that would be better?
Thank you
P.S I have never had cichlids before but know how to care for them.
Thank you
P.S I have never had cichlids before but know how to care for them.