I read around on a few forums and settled on this PTZ https://www.amazon.com/Megapixel-4-7%7E94-0mm-Optical-Security-507-20XB/dp/B00S0C7WCO/
 
I also took your advice regarding going for a 4MP with WDR: https://www.amazon.com/Hikvision-DS-2CD2142FWD-I-Network-English-Version/dp/B017Y4CD9U/
 
Also, it looks like I'm going to need to buy a different PoE injector as the one I linked to only supports 802.3af.