Nice job. They look pretty good. Maybe post some pics of the final product.
Also - After messing around with many filaments - You might use PETG as apposed to ABS or PLA. Its stronger than both, and fairly easy and forgiving to print.
Another option for strength is pause-printing carbon fiber inserts. I don’t have a link at the moment, but… In your model make a void for a tube (square void). Then when the print is at the top of the void, pause the print, insert carbon fiber rod.
Just an idea. It looks great! Post some pics, let us know how it works out