LG V30 + Otterbox Defender + Wireless charging + screen clearance + screen protector

I bought a Spigen Tough Armor case based on recommendations from here however I'm very disappointed in this case. It only protects the top and bottom of the case by 1.4mm https://i.imgur.com/0Awz57d.jpg https://i.imgur.com/zxTL8q4.jpg, and leaves the sides and screen completely unprotected. I'm used to an Otterbox Defender for my old Galaxy, so I'm very unhappy with the level of protection on the Spigen case.

Onto the questions for people with an Otterbox Defender on their LG V30

• How much does the case extend around the edge of the screen? It's really hard to tell based on pictures. Image on Otterbox website Ideally I want a flat front, as the curved edges are pointless to me, and I really don't care if they are covered

• Does wireless charging work fine with your Otterbox Defender case? Additionally, which charger do you use? I have a cheap wireless charger I bought at Kmart (in Australia) which works fine with the Spigen case

• If you use a screen protector with your Otterbox Defender case, which screen protector do you use?

I am getting very conflicting information from this sub, most people say they hate the tempered glass screen protectors/waste of time however after getting a scratch from a grain of sand right across the front of my screen after less than a week, I've got to put something on it, even if it's a plastic film protector

Really disappointed in this Spigen case, I used to have one on my Nexus 5 years ago, but living in Australia we have really limited options, so I want to know for sure that the Otterbox meets my needs before I drop AU$60 on importing it from Amazon US