I dont get how you dont have enough weight to squat, but you have enough to do deads???
You will eventually have to get more weights or join a jym, but for now you can do high rep squats with as much weight as you have, or body weight squats. Or maybe you could do lunges or something else to work your quads. These things arent as good as heavy squats for building mass, but its better than not working your quads at all. And id keep doing the deadlifts too as they work your lower back and hamstrings.
You might want to add some work for abs and calves too if you can.
Also, if you can, id try and lower the reps and up the weight. If you've done 12reps for a while it would help to change it up and do 5-10 reps (depending on the exercise).
Check out this sticky. It that has some proven routines that will take the guess work out of it for you:
http://training.fitness.com/weight-t...rst-34522.html 
