I think if it were mine, I'd hold out and hunt down an original replacement rim. Although there are a few good newer rims, nothing looks as good on a classic bike as the original equipment wheels.
I've often even bought used wheelsets to get the right components to make something original or correct again.

Are they the dark anodized Ukai 700-25 rims that Fuji used in the 80s on so many bikes? There's a few on fleabay right now.