We did more or less the same as you.
Bought a Victorian terrace and took it back to brick, all the lath was taken down as well the plasterboard put up. We did that on purpose so the walls could be insulated. We also kept what we could of the woodwork but a lot of it was damaged by 110years worth of wear and tear, so we saved what we could and got rid of the rest. I did all the carpentry myself, luckily there was a good wood yard nearby and the we’re really helpful.
If its a run of the mill terrace you can still get the architraves, I made the skirts using mdf planks and staff bead, so they matched what we had to take out. All the off the shelf stuff wasn’t high enough and he pattern didn’t match.
The stairs, I stripped with a heat gun and nitromors, it took about 4 days solid from start to finish. The wife and the dog were away so it was just me. I bought lead testing kits off the Internet but they were inconclusive so I used heat anyway and wore a mask. Also had spindles turned to match the missing and broken ones.
I really enjoyed doing it and would happily do it again. The house is now good for another 100 years, more than can be said for new builds.