Keep your main stash in the cooler basement, keep a handful in your desktop upstairs to pull from as you go for short term.
I don't believe the beetle problem to be common. Nearly all manufactureres have a beetle control process that includes freezing. As others have suggested, you can freeze upon arrival for that extra assurance. Not to say that is is still not possible to pick something up along the way during storage in a warehouse or vendor, but still not likely.
IF there were to be a beetle hatching,
- It would be limited to a very few cigars.
- You would be more likely to notice it early as you would be accessing the desktop more frequently and there would be fewer cigars in the humidor allowing you to see any problems more easily.
- It's not going to occur overnight; i.e. A warm day here or there on an occasional basis is not enough to induce hatching of viable eggs, IF present.
Best of both worlds. Keep some on hand on your desk; the bulk of them in your cooler basement.