More information will get you helpful responses. What doors to the hall do you need, where are they now, and can they be moved? Same questions for windows. And, what are your needs and wants? If you are adding a bathroom, where is existing plumbing? Is this suite on a slab foundation? What kind of closet space do you need? How many people? That is, is it just for you, or is it for a couple?

And finally, why did you start demolition without a plan?

Will this new space include the bathroom and closet? If you want suggestions you post a 2D floor plan with all measurements showing doors, windows, etc. And you give all information to help us help you.

Oh and did you make sure that wall was NOT load bearing?