Thanks, everyone! I ended up wearing the skinny pants, black silk shirt, and cropped blazer. I thought it was great. I felt professional but cool and I think the more casual pants made the overall effect better for the setting.
The interview went well! The cold snap wasn't as extreme in Baltimore as elsewhere, and I spent the full day inside one building, so I only had to walk a short bit on my way from dinner to the hotel. Honestly I would have enjoyed more time outside. But for those few blocks I was glad I had the warmer pants (and had stashed my hat and scarf in my Everlane tote - so glad I bought this bag this fall, in hopes that I'd get enough interviews to justify it).
I do need to find a better dry cleaner though. I took my shirt to a new-to-me place and the cuffs came back with pills - I didn't know silk could even pill like that. And looking at the yelp reviews, I'm not the only one with that experience. I'm scared to go home and look closely at the other things I had cleaned there (two other favorite silk shirts). Really I should buy a new black silk shirt that's sturdy enough to hand wash. This Uniqlo one, I have two copies and wash one of them, and it definitely shrank and faded despite careful handling.