Easy to store jumper?

Any recommendations for an easy to store jumper unit? We don't have a very big house so we need something that we can set up and easily take down and fold away when baby is done with it. We were looking at the ones like the Johnny Jump Up that you hang in the doorway but they all have a weight capacity of 20-25lbs and at 4 1/2 months my big boy is already over 17lbs and 25 1/2 inches!