My lab space is small, but I'm using it efficiently, I don't really need or can imagine needing more space
If I needed more space it would be for "cold" storage not active lab space. I have place for a chair to sit if I needed. Got a rack this week to place some of the instruments more conveniently and closer. Instruments that I don't use everyday, like the oscilloscope, are in storage and taken out and used when needed. I use laptops at home, exclusively (it's more comfortable), and I don't typically need one in the active lab area, if I do, I can bring it anytime. I do have desktops (they are around the house) but they don't have monitors attached to them, I use terminal services or ssh to connect to them.
My philosophy for a lab is favoring modern small instruments over bulky old ones even if you have to pay more for them. I do not like old, obsolete instruments, if their function can be replaced by a modern one. I don't use the active lab space for storing instruments than I don't usually use, I believe that is wasteful. And I like smart storage and using most of your space. Having said that, my lab will grow, we'll see if that changes