I'd think for a fairly regular 600lb payload, you'd want the 819s. With the 817s, you're probably looking at about a 1.25" lift in the rear with just the smartcap on there and nothing else, and maybe it'll be level with everything else loaded, but I think there's a good chance you could be...
This is such a great thread. Led to me getting the Dobinsons 821s installed on my '24 DCLB OR. Just had the work done so have yet to get all my gear on -- it's crazy how much the rear sits up without any payload, even with a 2.5" lift in the front. Will have to measure, but iirc the guy at the...