Components are definitely scarce at times and you learn to be frugal with them. Don't go nuts on autodoors, early on I limit those to freezer entry only. Lot of other doors can just be switched to "leave open" most of the time so they don't slow people down but still have a thermal isolation effect.
If you haven't yet, start cutting exploratory tunnels into all of the remaining mountains, more components can be hidden inside them.
Doubling up walls and making a simple airlock (door-one space-door) will lower the cooling requirements for the freezer room. Doors insulate less than walls so ideally a freezer should have only one entrance. This also avoids people pathing through it on their way to another place (each time the door opens you lose some of the cold). Sometimes it's still worth it to have another one to optimize walking distance (like I did below, direct path from fields to kitchen and cooler and to the dining room).
A lot of Rimworld play is about optimizing the use of time, avoiding unnecessary walking means you get more done.
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