Basically the wife wants this (no crown moulding tho). Will be 3/4" walnut veneered plywood doors/box:

https://imgur.com/a/uFwv6o8

Question #1: Can you recommend some specific hardware for the bifold pocket door? My cabinet guy asked me to figure that part out.

Here is my space and dimensions, excuse the mess (we need a cabinet here bad). 70"ish x 53"ish.

question #2: depth suggestion? I'm thinking 16" is minimum, 18" is maximum.

https://imgur.com/a/taJmgKG

Obviously its a pretty big cabinet, it will go from counter top all the way to ceiling.

question #3: any recomendations for design? We dont have crown anywhere, would you suggest just a 2" walnut frame around the top (so the doors start 2" below ceiling? Or should i do something larger like 8"? i have a bunch of 4/4 walnut 2.5" wide.