16GB of memory is a starting point. I have 24GB on my desktop and I have had it puke when swapping an image between Capture One (v10) and Affinity Photo. Also since you have some sort of tower, get internal drives which are much faster than USB because Capture One can be drive intensive. Keeping my image store and catalogue on USB drives would drive me up the wall.
You want to keep as much as you can local to your system's data bus. I have my program/data drives mirrored (RAID 1) running on 5GBs controllers and it still takes a long time to get my images to come up in Capture One. If you can afford it, get SSD's for the catalogue and image storage drives or put the data store on a SSD based NAS using a 1GB (minimum) wired connection.
As for wireless, my desktop is plugged into a gig switch that has my NAS connected to it and the switch is connected to my wireless router. So I have wireless capabilities without having a physical wireless card in the box, it is a desktop for heavens sake - I don't carry the beast around.
General rule: Keep as much as you can off of the C: drive. Unless that means that you want to set up a desktop as a glorified laptop. (One drive to rule them all) I stopped using a single drive back in the 286 days.
-edit-
I forgot one thing: Never use Windows Home - use Windows Pro as a minimum since it is much easier to shut down some if not most of the Microsoft add/tracking issues with Windows 10. It costs more, but it is well worth it to gain the flexibility in how your system is viewed from afar. Another thing, never have your "normal" day-to-day account in the Administrator group. All that does is turn your device into a Virus/Trojan attractor.
Last edited by PDL; 01-26-2018 at 07:06 PM.
Reason: added snark - and a warning