But yea, it's very unlikely I'd be able to play any of these in person before I buy. Possibly the Martin, but definitely not the Santa Cruz or Huss Dalton.
Congrats on your search and the ability to get a once in a lifetime guitar. Buying such an instrument is a big event for us guitar lovers. I remember thinking about tone woods, specs, builder reputations etc. until my brain was sore. And the result of such time spent gave me some intellectual biases that in the long run were not exactly helpful. I really had to go out and play some guitars. And in retrospect that was way more fun than my previous obsession over details.
I realize that may be problematic during this particular time. Maybe find a store with a good return policy like the Guitar Center in Harrisburg?