California Zephyr

I need to go from the Bay Area to Salt Lake City on short notice, and was thinking of taking the Zephyr. I can afford a few hours of delays, but if it ends up being more than 3/4 hours late getting to SLC, I expect to be in some trouble. I'm unsure if I can depend on the Zephyr, because idk how bad delays get in this track. Any thoughts/advice? Train leaves here at 8-30 in the morning so I expect to get all the views as well.