I have gone down that road.
Bigger wheels, larger tires, adapters.
I choose a wheel with the same offset. And an adapter plate thickness compensating for the bigger width of the tires. So the original connecting rods of the fenders could be used.
I can tell you more about the adapter plates etc..
I got stuck in making the fenders. Too busy with my business... So when the weather got wet I removed the wider wheels again.