I guess I should post the info I'm using...
Right now I'm looking at spoke lengths of 259 and 260mm
Based on
this calculator.
The hub is a Deore XT Disc (36 hole) hub.
Spokes = 18 [each side]
Cross = 3
Width Center-to-Left = 32mm
Width Center-to-Right = 18.5mm
Left Flange = 61mm
Right Flange = 61mm
Spoke holes = 2.6mm
The rim is a Sun Rhyno Lite 26" 36 hole
ERD = 547 (although it is hard to measure accurately and the numbers people post online vary by as much as 5mm.)