Well, yes, 8GB is a really nice number, but at today almost everyone recommends 16GB of ram (i'm not saying you need to go for more ram!)
About wired adapters, mainly not. I'm saying this mainly because maybe the system is too far from the router/modem (like my case) so, maybe that is a point of interest to think.
Also, the H170M supports M.2 (but i'm not sure if you will need it).
Both choices are great, its your call, but i would pick the H170M (if i'm not wrong, its from ASUS, no way to go wrong).
Its your choice