OMG that Executive Box, I have one of those too! I wouldn't get too fussed about quality, what you have is fine. Clear voice, no distortion, lighting works as expected. Don't let "perfect" get in the way of "good".
Congratulations on 1K! As for video quality, do what you can afford, and want to do. You probably don't need to go down the rabbit hole of upgrade, upgrade, upgrade. Let the channel evolve as it needs to, and don't sweat the rest.