Those are awesome!  I'd get rid of the wallpaper and that ceiling fan and keep the rest as is.  Nothing these guys will purchase will last like those cabinets.

I had basically the same cabinets in my former home, also built in 1957.  Mine did not have the applied trim on the doors, just flush birch doors, copper drawer fronts.  Mine also had the double-bowl and double drainboard version of the sink.  Someone has taken very good care of this kitchen.

lawrence

I almost bought this set, but decided against it for a few reasons (these cabinets appear to be fairly uncommon, I would've needed to go to Missouri, and I'd need to house them for about 5 years until we're ready for the big remodel).
 
What got me was the text of the listing:
"My parents bought these cabinets because the salesman took his key and scratched the front all the way across and didn't leave a mark.  My parents figured they would survive a family.  In all honesty we only removed them because a realtor said he couldn't sell a house with a pink kitchen.  These cabinets will be around longer than the new ones that we put in."
 
It kills me that sellers seem to realize the durability and quality of vintage items and in the same breath will say something like 'it's dated' or 'someone else told us to do it.'  If you're living in a 50s house, chances are good that no matter what you do, it will always look like a 50s house, unless a drastic remodel occurs.  Having cabinets from the early 90s, I can say that newer stuff just doesn't hold up. 
 

I would've fired the realtor before I gutted that kitchen.  We looked long and hard for a time capsule place and every home was an awful flip (we're in NE Maryland).  This area is only building McMansions, so the smaller homes are being gutted and flipped.  It's awful.

Is that issue common to all of the brands?  I'm enamored with St. Charles cabinets and if I ever stumble across a cheap set locally it may just come home.  I love the features on those specifically.  It seems a lot of thought went into the design. 

I could also do some custom built birch or maple cabinets, but I love the look of metal cabinets.

You should! It looks like a fairly large set; whatever you don't use you could resell.

We're in need of more cabinet space; the plan is to extend off the back of the house, which would allow for a pantry and additional cabinetry.

It sounds like you're in a similar boat. Are you going to make the Sub-Zero look like a built in unit?

Sounds like you have a plan pretty sketched out.

When the kitchen gets expanded, my requirements are a pantry, vented exhaust, and room for my ever increasing Pyrex collection.

The kitchen is in an L shape and opens into the dining room. There isn't a wall separating the spaces. It's a large kitchen spacewise, but it was planned for people that don't cook.

We had a walk in pantry in 2 of our apartments, here we have the useless pantry cabinet. All of our cabinets are full. Interestingly, this was a custom home. Our kitchen suffers from a lot of wasted space; we have a breakfast bar which makes no sense since it is in between our open kitchen and dining room. The plan is to add about 300 sq ft. onto the back. I can't wait.