This is by far the best option , which is why when I was developing properties every window would have a timber batten above, which was fixed with plasterboard fixings and a few dabs of gripfill to accommodate heavy curtains or blinds, it will never come down (obviously it’s a permanent fixture) 🙂
I’ve just bought a bridge from Dave, he is an absolute gentleman to deal with and even sent me a few extra parts, you can deal with confidence, I wouldn’t hesitate to buy anything from him, cheers Dave, Tony ☝️