I ran a bunch of workstations with Windows 7 for many years this way, also using the predecessor of PrimoCache with local SSDs with a cache. I had an OpenSolaris server for the backing storage with ZFS/COMSTAR.
I've been pretty much Linux only for the last ~15 years or so, but NVMe/TCP is so much faster. I would look at doing a secondary disk applications using NVMe/TCP once booted.
I used to netboot Windows 95 on a campus Novell network... you can probably work out how long ago that was ;) It started booting a 1.44MB floppy boot image of DOS 7 via (IIRC) BootWare boot ROM (pre-PXE) and switching to Windows using Joe Doupnik's installation method. In fact I was lucky enough to get Joe to help out in person on his way back from a nearby conference.
Performance was not where it needed to be though, we switched to a netboot way of imaging Windows 95 onto the local disk -- actually 2 images, a "good" copy on a hidden partition that could quickly replace the live version when it hit cruft force 4 or thereabouts; and running (almost) everything else over the network. Fun fact: ~1200 PCs used to run an awk (gawk.exe v3.0) configuration script during boot.
I've been pretty much Linux only for the last ~15 years or so, but NVMe/TCP is so much faster. I would look at doing a secondary disk applications using NVMe/TCP once booted.