Both the photos show a poorly designed caliper mounting bracket, with no stress spreading up the blade tail aspect. I will also speculate that the fork blades used in the failed images are of thinner diameter and/or wall thickness then what's likely on your bike.
The "but" is that it only takes one failure to do you in
There's no way I would suggest this for anyone other then one's self. So you have to ask "what is my risk management and acceptance level". Only you can answer that.
For the cost of an already disked fork this whole question is moot and also be able to retain the reversing of the mod. Just reinstall the old fork. So my advice is to first consider a made for disk brake fork first. Andy