I upgraded the church computer to 11 yesterday. It's a Dell Optiplex 7020. It's very similar to the spare 3020 I have at home except the church computer has a 4th gen i3 processor instead of i5, and it has a SSD. I think the 7020 might be a little older because I didnt see any USB 3.0 ports. Both only have 4GB of DDR3 RAM.
W11 runs very well on the 7020, probably because of the SSD, but several devices show up as red ! in Device Manager, and windows update optional updates doesn't find anything. I'm going to download all the latest W7 updates from dell.com and apply them and see what happens. If everything is working, I'm not sure how much the missing drivers matter.