Not to muddy the waters but here's a few thoughts.
Will you be using forks off the bucket itself or drop the bucket and use forks directly? If so that will make a significant difference to the lifting capacity. (and if you're going to use the forks a lot I'd strongly recommend not using them off the bucket - I do both and can tell you it's much nicer not using them off the bucket. not just load capacity but maneuverability, safety.)
Also, when you lift a pallet off a truck consider how high off the ground the deck is? Then consider at what height the max capacity of the loader is rated at. (I haven't looked it up for the loader in question.)
And also consider that when you go to lift the pallet you can roll back the pallet a bit and that will actually put a small portion of the weight behind the pins which will allow the loader to lift a little bit more weight.
Also consider all the other tasks you'll use the tractor for - I've no idea what you'll be using it for but for myself while there's times I'd like to be able to lift a bit more with my forks for everything else I wouldn't want a bigger tractor for my property - and there's been times I've given serious thought to that very question and at the end of the day I always come back to the fact that it's the perfect size and larger would be more of a hindrance.
Hopefully some one who has the loader in question can demonstrate a known weight being lifted because that will give you a real world answer. I can tell you my tractor (Ck20s rated to lift around 1100lbs at the pins) can easily pick up a 55gallon steel drum full of concrete on a pallet. Math says that's conservatively over 800lbs. So that's roughly 73% of the rated capacity. (and given how easily it lifts it I know it'll lift more. I've maxed out it's lifting capacity so I know how it handles when it's at the max.)
73% of 1835lbs is 1340lbs. So while this is all conjecture my guess is you'd be able to do it. Like I said hopefully some one can prove me right/wrong.
To sum up consider the bigger picture and what you'll use the tractor for. Would a bigger tractor be helpful for all tasks? Then go bigger and you won't have to even think about it, and it's sure nice not operating at the max capacity. If you're trying to save money by not buying bigger then hopefully some one will give you a real world test.
Hope that helps.
E.