Hey Jav, for a while, I did a bunch of 68 spoke wheelsets. They were a Blue-eyed sollanovich! BUT along the way I found that if I downsized to 10/32 or 12/24 bolts, then I could have more leeway in aligning the holes.
BTW yes most were the old 5-holes (which I used to pay 8 bucks each to have the center turned to 1.5 from 1.4) but that last couple I did were 9-hole (still the math is wrong!)
Consider nice washers, good quality American hardware, and smaller bolts all around so it will still be reasonably balanced (IF that makes any difference.
Mike