Also, does it harm me to ask DCB Legal what their settlement offer would be?
Our experience is that they very often discontinue, so if you stick it out, there's a very strong chance you'll pay nothing. But if you're set on trying to settle, why let them set the agenda? Both sides can make offers.
Yes, it's normal. Once MCOL says it's been sent you can complete the N180 online and you will find advice on its completion if you search the forum.