I'm about halfway through my new bench build. Finally to the point where the old one isn't cutting it, coupled with the fact that I got a truck load of free dimensional lumber from a friend that he had no use for and wanted cleaned up out of his garage. I decided on an L main bench, then a floating island in the open space of the L that will have presses and barrel vise on. Going to have some sort of swapping system to get able to take things off of my island if I need some more space with replaceable bases that will get drilled. As soon as you have something up there permanently mounted, it's in the way, you end up changing/upgrading or it's the catlyst that starts collecting clutter. Hung up some cabinets and what not as well, which should help inventory and organize.
Ripped down anything 2 by into 2.5" tall strips, laminated them all together into a butcher block top, router planed, rounded corners, and routered edges with a chamfer. Suffice to say, it's not going anywhere when a press handle gets pulled down.
I have the space to do something like this. but I intend to see how far this configuration gets me. Looks like you have plenty of space for sure, nice work.