If that is comparte to a pre-flashed BTHH5A and it's your best alternative then I'd get the BTHH5A. I mean even if it's not ideal for your requirement, you would still have it as a backup router and AP in car something happens to your other router, for the few euros difference.
Though, I am still not able to figure why you can't just get an ISP modem. Those are usually everywhere dirt cheap.