I just want to clarify the the ir on the 2432 is only rated at 10m vs the 30m on the 3332...with the right settings it should be fine either way....i would sacrifice ir for the benefit of PIR, audio and sd card...
Also note that that cheap NVR only records 1080p max, so if you need to run 3mp then it wont work...there is always a trade off.