Nice! They're already coloring up and looking good. The plecos are adorable little guys. I have a soft spot for them, and royals in particular.
IME keeping plecos with festae hasn't worked out. They relentlessly hounded and harried my 10-inch royal pleco, ripping at her fins and not giving her a moment's peace. I put her in another tank because they were going to kill her even though they were only about 3 inches long at that point.
Yours might not yet be large enough to be so aggressive, but please keep a close eye on them if you choose not to put your plecos in a different tank. They're called Red Terrors because to other fish who can't adequately defend themselves they might as well be sentient meat grinders with fins.