I would spend a few dollars more and get an ACTi-4511. I would go with the TCM-3111 for a few more dollars than that.
They are POE, a good injector is 40 dollars or less. If you plan on several or growth, get a good POE switch such as the HP Procurve E2520-8g-POE.
Back on cameras. You want them to support H.264 compression and you want monitoring/recording software to support several devices and have a smart phone app.
These cameras are available at B&HEdit:
Oh yes, you did mention wireless. ACTi makes wireless but I would certainly look at any camera you are concidering with H.264 compression, how many surveillant camera places carry it or is in the obtainable inventory and monitoring/recording software that supports it.--
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