If you are relying entirely on cash savings for the financial requirement, you can apply before moving and then move over together (you don't need to show any evidence of employment), but you will need to have accommodation sorted in the UK. I don't think AirBnB will work in this situation since they can't rent to you long-term - It would really be better if your husband went ahead of you to sort a place and get permission from a landlord or letting agency for you to live there