Murray, you're 'in the neighborhood'. Where you're at is entirely useable as it sounds like with how your hands address the instrument it's playing well.
IF you wanted to lower it a bit more (and we're down to the 'splitting hairs' measurements) you might crank the truss rods (and here I do mean) slightly and watch your measurements carefully, you'd only want a 32nd to come off, and lower your bridge by a corresponding amount. I mean we're talking VERY small changes, since you're already happy, just looking for maybe just a hair lower if I'm understanding you correctly. So if you do any adjustments, we're at an extreme fine-tuning stage. 1/8" clearance over the last fret is good for heavier hands, I'd just be careful not to end up with the action low at the nut end and high at the last fret. There is a relationship between neck relief and string height that is aggravating until your head grasps it (it sure as hell was for me . . . . . ), but as I said you're good as is.
As well, at this fine point, you'd also run the bridge a bit higher on the E-side than the G-side, but just a hair, maybe 'lean it' downhill on the G-side by a 32nd.
I too, walk that line between how 'low can I get it vs. it wouldn't rattle if I had a softer touch'. So generally when I get it to a point where it rattles some unplugged but I hear none of it through the pickups plugged in, that's pretty much my 'THERE !'. Once I can hear it rattling consistently through the amp, then I know to put her in reverse and let a little relief and string height back in. Maybe that will work for you.
Should none of this make any real improvement for you, you smartly have measured it as it currently sits, so you can always return it to those measurements, have a pint to old Joey, and call it a day !
All the Best to you in the UK !
