Can Not Find Good Dog House - Help Please!

Hi, It's getting cold here in Oklahoma and I want to get a nice huge
insulated dog house for my Half German Shepherd - Half Lab. I have the
largest Dogloo type doghouse but want something that would swallow
that. I'm six foot and would want something that comes to about my
chest and is about a 6x6 insulated area inside that looks nice and
perdy on the outside. See I want this dog house to house the current
dogloo indigo type dog house I have now.. Does this dream dog house
exist - Do they have some secret website that no one knows about - or
am I going to have to build something myself? Any help would be great
thanks!

The World Best Dog Owner
Chris Hudson 23 Oklahoma