I recently finished my transition over to Victron and I couldn't be more excited. Running this setup with an OVRLND camper on my 2019 Toyota Tacoma DCLB OR. I was using a couple AGM batteries with scrappy Renogy gear for the last few years. The AGM's were at the end of their life, so instead of just replacing the batteries, I replaced the whole system.
The air circulation in this box is quite good, I have a 4 x 9 inch vent on top, 3 inch cut out on front and 5 inch cutout in the back. It's not perfect, but it's quite the improvement over my previous setup from which I included a photo. Overall, I think this turned out well given its on my overlanding rig.
Current specs:
Epoch 300Ah Essential LiFePO4
Victron Phoenix 12/1600 VE.Direct
Orion XS (transmission charging)
Orion TR (power my Starlink)
MPPT 100/30 (I'm only running 200 watts of solar)
Lynx Distributer
500A Smart Shunt