What you listed should be able to run TrueNAS fine. I am guessing the 1TB SSD would be for your boot-pool. ( you could try to find a smaller M.2 and use the 1TB elsewhere. ) 4x HD would end up as whatever pool layout you decide on.
TrueNAS 25.10 doesn’t have built in support for the 1080 Ti due to NVIDIA driver changes.
