1: SIRTF
The SWIRE SIRTF Legacy program will map 25 square degrees at 3.6, 4.5, 5.8 and 8.0 microns.
It should be easily capable of detecting the rest-frame J and K-band flux of objects like our AGN out to z=2.
It should find more than 105 of them!
Deeper SIRTF surveys, covering smaller areas, should detect a few hundred of our sources out to zɰ.