We use nwipe at the office and are happy with it. It has a dod preset or you can stick with prng. We usually use prng and zeros.

If you have a ton of drives I think shredos can be automated with boot parameters. Could save a lot of time and/or let you scale wiping better

Started replaying Tears of the Kingdom :)

For your uses, assuming you aren’t using headphones or speakers connected to the monitors, DVI should be just fine. HDMI would get you that audio connection (if the monitor has it).

We use a lot of DP to DVI at the office (the monitors are an old HP model that refuse to play nice with DP to DP) and it largely “just works”.