Congrats man! I would get a weistec kit as well if I were keeping my car. This is what you need to solve your heat issues ......
http://weistec.com/all/c/c-63/2008-2011-w204-m156/supercharger-upgrades-parts/trunk-ice-tank.html
http://weistec.com/all/c/c-63/2008-2011-w204-m156/supercharger-upgrades-parts/trunk-ice-tank.html