Not too shabby! If I might maybe make a couple of suggestions?
I would lose the GP watt meter and the MT-5 tracer meter and just use the Trimetric. Of course, with the appropriate shunt installed.
I would move your 250watt fuse and run it between the charge controller and your battery bank.
Lastly, I would isolate your invert from your converter. (by using a subpanel) If you're not on shore power, you'll end up using your batteries to attempt to charge themselves via the converter.
Just some smansy additions... you might consider adding a 40amp fused cutoff switch between the Charge controller and batteries.. and another 60amp fused disconnect between the batteries and your convert... then move the red stand alone disconnect between the inverter and your relay switch. For the cost, you might appreciate the additional protections, and it's nice to be able to isolate the main system components for maintenance purposes.
You might consider using 10/2 coming down from you panels and 2/0 between your charge controller and batteries... but that's a personal choice. It's just with the little difference in price it's an inexpensive way to help increase the efficiency of your system.