I love my setup, the 4 dog box and drawers work great! One drawer is for guns and the other is for all the other stuff, like tool kit, tow straps, dog first aid kit, fire extinguisher, and misc other stuff. That drawer also has a plastic tray in it for birds and can easily hold 9-12 birds. The dog box has worked great, even when we go to SD in the end of Oct when we have 4 dogs back there over night they keep the back area around 45-50 degrees even on nights it gets into the teens. I haven't tried the heater yet meant to get it all hooked up this year before the season but that didn't happen. it's all wired and mounted just need to finish the wiring hookups. I think the heater will do just fine, not looking for a massive temp increase in the back but if it can keep it at 30-35 degrees on a 0-5 degree day ill be happy with that. Over all I love my setup and a lot of the guys I hunt with want something similar to it.