Solution 1:

Yes, Let me know your availability directly equals "When are you ready for the video?" "Do you have a time slot someday soon for the video?" "Based on your calendar, when do you want to schedule it?" Business etiquette suggests looking at your calendar and offering two or three slots as your reply.

Also, Would you like to dance? means "Do you want to dance with me to this song?" Shall We Dance? If in 3/4 time, that means "Let's waltz, yes?" It is not an investigative request for information as to your general interest in dancing as a concept.

Answering Will do just wastes time since you already said it is "a good idea." Like when someone asks if you know the time, you would say what time it is, not Yes, I do know the time.