Thanks Old Ned, awfully good question. High flanges on both hubs. Which of course are different diameters, front and rear.
I just the figures getting together so i can get my spokes ordered. Have yet to be informed what the ERD on the front, either, the Jalco 27" (the eyeletted one) with 32 holes. My rear rim's ERD is 622.
Planning to lace 3x, unless the flanges on the hubs look like they've been laced differently from that, I'll find out soon.