Picaso Trigger & Blue cheek pair

[Newbies]

Looking for opinions on housing together in a 180g 6' tank a Picaso Trigger and a pair of Blue Cheek male/female Triggers. The Picaso is the current inhabitant and the new additions will be the Blue Cheek(Throat) Triggers. I have not found anything online saying no to the houing of them just to be cautious as they like all fish may not like each other but hey how would the odds be of most Humans being compatable in an area of equal size. .

Thanks for the opinions Im sure to get!!!!