I certaintly like the looks of the Space Horse better, but I'm not fond of the build kit on the complete bike. I'll probably ride both, along with a Vaya, and see which I like better. I'm not sure if I'll love or hate the disc brakes. I do wish the Vaya had a triple with bar ends instead of the double with Apex brifters. I'm not crazy about the rest of the parts spec on the Vaya 3 (Sora triple crank, Microshift bar ends, lower-end wheels), or I'd just get it.
FWIW, and I'm not recommending for or against the Vaya 3...
A crank is an expendable in the long run. Wear the Sora out, perhaps after two-three long tours, and replace it. In the meantime, it'll serve you well. Better yet, work with a dealer and get him to put on a mountain triple, with good, low gears (24 or 26 tooth on the low end). Shouldn't add more than $100 or so to the price, even if he hits you with nearly full retail on the new crank.
Wheels are wheels. It's unlikely you'll get wheels that are ready for loaded touring on a new bike, unless you go full custom from a good builder. Instead, find a good wheel builder (or learn to do it yourself), and make sure they're tensioned adequately and stress relieved. They'll be good enough after that, again until they wear out. Maybe the hub won't last as long, or, if you repack as needed, maybe it'll last longer than the high zoot hub. Sometimes bling takes weight AND durability out of the lower end parts, while replacing it with shine. (The shine will disappear with the first rain.)