A lot of us have so much wine, that we build racks to line the walls & only keep a few in the fridge or have a smaller ~30 bottle wine cooler. We couldnt possibly afford to run the walk in refrigerators it would require to keep ALL of our wines cold
Sounds like you need an old standing freezer, modified with a Ranco temp controller for the carboys and a ~25-30 bottle wine cooler for the bottles.
actually a walk in cooler is more economical then a window unit, even better if its 220.
and they are cheap , if you shop around..
i bought a 8 x 12 x 8 for 3500.00 refrig uint and all...that should hold about 500 bottles with the proper racks.