Well, personally I wouldn't try it w/o knowing how the current spokes sit in the nipples and the specs of the rim.
ERD is a tricky customer, as it can be both a geometric feature of the rim, and a virtual point in space to aim for when building. Rim manufacturers tend to give it as the surface where nipple meets rim, while builders tend to give it as the diameter where the spokes end.
I've had good luck by measuring the hubside diameter of the rim, then removing a single spoke (or measure through the valve hole) to measure wall thickness, then adding whatever deemed required to get good spoke/nipple overlap.