I am a first time home buyer and the house I am buying is a small cinder block fixer upper. It has 2 small bedrooms that I want to merge into one large bedroom with a nice big reach in closet. From what I can see of the joists, they run from the front door to back door and are 12" apart. The bedrooms are roughly 10ft by 10ft, the hallway is 3ft by 7 & 1/2 ft. In the image I have attached is a good description of what I want to do. What I need help with is figuring out if I can safely remove the wall sections I am wanting to without damaging the structural integrity of the house. Any suggestions?