Nice. I've been looking at remote power storage for a while and lead acid has tremendous drawbacks. I'm sure you'll be happy you didn't go that route in the long run.
Keep in mind with the duracell unit, it has sealed lead acid battery type and it produces modified sine wave ac output. With the lead acid batteries they will have a much shorter life than lithium batteries if drawn down at the same rates. The modified sinewave output could cause some irregularities with use of some electronics. If it had lithium batteries it would be a steal at that price.Costco has Duracell PowerSource and Solar Generator, 660 Watt Hour Battery Capacity, 1440w Output Inverter (1800w Peak) on sale for $499 for members.