Not the scale you're looking for but could be useful regardless.
I built a HTPC form factor Server for me and my mates. Group size is 4 to 6. I turn maps on and off depending on what we're doing but it's normally 2 or 3 maps on at any time. We have 24 mods, main ones being S+ and Ark Automated 3. I don't see the rest of the mods impacting the server.
Ping on Telstra NBN FTTC is 11 to 30.
CPU Intel Pentium Gold G6400 4 GHz Dual-Core Processor
Motherboard Asus PRIME B460I-PLUS Mini ITX LGA1200 Motherboard
Memory Corsair LPX 16 GB (2 x 8 GB) DDR4-2666 CL16 Mem