I'm sorry to say bud but those plants are rotted and need to be disposed of. Have you gotten a lot of rain? Also could be result of a pest. Do you have others is it just 2?
Unfortunate that you had to cut early but I understand your reasoning. As far as drying and curing I personally trim and hang for about 3-5 days but it differs you are looking for the outside of the buds to be dry to the touch and you want the stems to bend but not snap. After that some go...
Looks good I'd say you have at least 2-3 weeks! Your plant could have turned hermie due to stress and popped some seeds but from the looks it will be some prime time shit just let her finish. Good luck to you!
That is a great idea with the tent it will prevent a lot of headaches the closer you get. Being patient is the most difficult part of growing I've seen too many plants cut too early because of impatience. Wait as long as the weather will let you and let her finish and you will be rewarded!
That is a tough thing to do but I'd say anywhere between 4-8 oz? Haha that's a total guess there are many factors that go into final yield. Good luck to you!
In my experience 40's aren't a problem I've had plants out with a few frosts before the biggest issue this time of year is the dampness in the mornings and them not getting a chance to dry out during the day. Putting a blanket or a little tarp isn't a bad idea but you really don't want anything...