First adjust the rear brakes. That will make a big difference. I would guess you changed the shoes while you were in there. Use a safe set tool. Then you can adjust the cables. If you can't get enough adjustment out of it. You can have California Push Pull or a local shop re work the cable for you. There is a link to them in the link section.

Safe Set Tool.

!cid__11-09-12_1601.jpg