I'm going 40/48 with the Rhyno Lite, the Chukker is 2x as much. I guess we'll see how it works out. I ordered the rims and hubs online and will have a trusted LBS build them up. FWIW I decided to try the WheelMaster hubs and not use the drum brake for the initial learning phase. I will probably get another wheelset later anyway, I always like to have more than one. Ordered the rims from Amazon for $63 and the hubs from Green Canyon Outfitters for $76. Looking at spoke options prefer 2.3/2.0 butted in the back and 2.0/1.8 butted in the front maybe $1 per spoke hopefully? Wheelbuild probably $40 per.
Also ordered an HG-61 12-36, an M-592 long cage, a KMC X9 and some...wait for it...brifters! It was a big evening! Now I need to look at some chainrings.