That sounds fine from the description. You could share a schematic or photo of the circuit just in case, but if nothing is smoking then it should be fine 
If you do run out of pins again in the future, please consider using a multiplexer. I made a guide on it: Cd4051 Multiplexer Tutorial Is Here!
You can use it for digital out as well. And it works with any of the programming languages as well!
And feel free to share a video/photo of the project when complete! Looking forward to checking it out.