No, unfortunately Magic Mornings are for guests who buy 3+ day tickets and Extra Magic Hours are for guests who stay at one of the 3 onsite hotels. So, I guess you could get EMH with a CM sign in, but you'd have to show your room key from one of the official Disneyland Resort hotels.
No. And you will get a comp 1 day park hopper given to you to use that day. If you are staying onsite as a dlr hotel guest then yes you can do early entry. But the system now can restrict entry prior to a certain time. Peak days have seen CM entries even restricted to entries after 10 am or 12 noon (very rare but can happen).