How did you get on? Sounds a great size for your boys. My breeding pair from ebay arrived today. I have put them into my 260 litre with my various other fish and 6 betta girls. So far all looks very peaceful. there's a female moonlight gourami, a male lavender gourami, plus a stroppy female angel in there too,- but no-one has given anyone else any grief. I'll be keeping a careful eye on them of course and if needs be move my male on his own. Would be nice if he could stay with the others though. Fingers crossed they all still have their lovely fins come morning.