brake issues, help me get my car driving

Since you do get a stiff pedal before bottoming out, I would try driving the car in a parking lot and braking a lot. I assume you have an e-brake on your rear disks for backup stopping. With rear drums, I usually have a soft pedal until I back up and brake hard a bunch of times to let the self-adjusters work. With disks, the pads don't perfectly match the rotors at first so may "tilt in" as they contact, which could give a spongy pedal. After a little braking, they wear to match perfectly fairly soon.