Some will say Dahua, some will say Hikvision, few to non will say Foscam,
Security cameras by there nature need to be reliable, secure and have decent support, speaking for Hikvision if you buy from an authorized re seller you should get good support and relatively reliable software for Web access, mobile access and an ok NVR interface all be it a bit old fasioned, where you would buy in the US is unknown to me as i am not US based
Dahua is also a respected manufacture, Nayr is very experienced with Dahua and i am sure can point out all the good things about that brand
My feeling is that Hikvision would be more suited to you as you are less of an enthusiast
and as Nayr states, all cameras have very adjustable mounts or can be fitted to an appropriate mount to give the angles and coverage required
Things NOT to use externally in your situation, DOME cameras, DO NOT fit dome cameras, as you are less experienced you will find it easier to use Turret or Bullet cameras, Turret cameras have become very popular as they are less obvious and threatening and tbh they just look better BUT if the cameras are fully exposed with no cover above them then bullet style cameras will be your next option, the lenses are partially protected with covers above them giving them some protection
You then need to think about what is being protected and how much detail is needed, a 2.8mm lens will give a wide angle and overall view of an area but will give very little detail on faces, a 4mm 6mm 8mm lens respectively will give closer zoomed in detail but with less of a wide angle, bigger the number, closer the zoom
And please dont ignore Nayrs post, he does not say anything for no reason - mostly