I’m at the age where shit just needs to work. Some sort of remote desktop, or NAS or a combo might be the better easier route.
I get that. I don’t built machines anymore - time sink - and I don’t rebuild my kernel, etc.
But the synch you’re thinking quickly puts you into a tier higher than you may have time for. And a NAS gets you most of the way there as long as you understand and accept a failed NAS (or its OS, or a non-redundant disk setup) is going to hose your work everywhere instead of just on the one discrete machine you were using previously. You’re trading one risk for another, and that may be a big deal.
Re-examine your goals, and be really sure to separate what needs to synch vs what doesn’t (hint: user data synchs, most OS setup does not) and then see if you can carve out a decent solution with that. Maybe it’s as simple as an eBayed refurb NAS and another offsite for backup.
\sigh