I’ve finally decided that the weird leaf spots are some kind of fungus, probably spreading as a result of poor ventilation. But, it doesn’t seem to be affecting the flowers too much.
I put a small dehumidifier in the room to help circulate air and keep the humidity down. Long term I need a tent and fan, both should be arriving next week (though the tent is a bit small for this plant so it’s mostly for the next round :) ).
Otherwise, everything is going okay! I’m going to start flushing next week and I’m hoping to harvest around the end of flowering week 8 / beginning of week 9.