Just a suggestion and only that... I have always been a fan of adding 'activity' fish to make the centerpiece fish(es) feel more comfortable. In your case, maybe 3-5 Columbian Tetras. They are super hardy and their coloration (or lack thereof) will give you a visual idea of your water quality. i.e., dull fin coloring means bad, bright fin colorings = good. Also if your centerpiece fish see that the Columbian Tetras aren't scared of a bigger predator, it will make him feel more at ease.
Just my $0.02. Definitely keep us posted though! We here at MFK love progressions and pictures! ;-)
PS: Your fish looks like a MiDevil = midas/red devil.