Hi Smurf786,

I'd recommend A with the crossing fields of view.  You should be able to get a good picture of anyone coming up or down the walkway for identification purposes.  The L and R views you're looking at otherwise might allow someone to slip right between the two cameras so that all you're really capturing is the back of their head.  Any 2.8mm camera should provide you with a good 90-108 degree field of view which will be more than sufficient to give you fantastic coverage from 2 cameras, and if you're worried you cannot zoom in far enough go for a higher resolution camera (5-8MP) to give you extra play on your digital zoom.  I'd recommend our https://www.securitycameraking.....ra-w-epoe/ as a great camera for this job (paired with one of our NVRs, naturally)  Hope this helps!