If you only need it to skip the power outage, I would look at something in the range of 800W to 1000W in an online ups.

This wattage should run your devices for 5 minutes or so, as you have quoted them. The online UPS will always run its load off on the battery, so there is no swap over time. Other types will be fine for a PC or normal electronics, but the hitch in power could cause a defect in the 3D print.

This exactly my feelings too. Keep treating people nicely, but you see enough shit every day to make you not like people in general

In competitive games, as you pointed out, it doesn’t really. Usually they end up with controller only servers.

In a co-op game it doesn’t really matter that much. I would argue it’s more about the movement than the shooting anyway.