Wow that is pretty impressive, your fish are beautiful! I really like the Argentea and the last one maskaherosI have kept most of the Vieja genus and their close cousins (my photos are all fish I have kept), but hardly ever, more than one species of the genus (or its look a likes) together in a tank successfully.
And I agree it is best to wait until you can provide appropriate accommodations, for any fish.
A few of the other similar species once considered in Vieja, but not now DNA evidence has separated them.
Chuco micropthalmus
Chuco intermedia
Maskaheros argentea
And Maskaheros regani