Very nice job. Neat and clean install. I dont usually invert to heavy stuff but do seem to notice that people mention having even more batteries than that if inverting heavy. Not raining on your parade but I also remember helping a guy in a campground with a dead bank of four gc2. He was baking cakes and stuff. It's one thing to warm a coffee in the micro for seconds vs cooking something. I'm running six GC2 and iirc my toaster pulls about 80 to 90 amps dc on my Xantrex prowatt 2000.
Your old gc2 were about 200 amp hours and your new agm are 210 yet you will do better when pulling heavy amps off the agm vs the gc2 as I understand it. You will know when you watch your voltage. You will love the solar. I was checking each photo to see where the next 360 watts of panels are going. :)