Hey man! Looks good finally rocking. If your plants are shorter or are later in flower you should be able to turn it up more. I'd start off on the lower end and slowly raise it till your plants start showing light burn signs and then back it off.
I just checked mine and my monster in the corner is at about 1300 and the one next to it I'm about to chop is at about 1000 ppfd. Sounds like you're right about in a good spot, I'd just watch it and turn it down if you see tacoing/burning or your buds start to foxtail a little.