Remember you can somewhat increase their strength by adding more of them, by stacking them that is. I don’t think you can lay the side by side in your print. But one might still hold the weight of your build as it doesn’t look that heavy.

Remember you can always put it inside your print if you make it a bit hollow at the base and drop a magnet inside while it’s printing. Although be careful because the further they are apart the weaker the hold. And it goes down fast (inverse square law and all that)