For the forks; I bought clamp on forks for very cheap; but I Don't think they would suit your purpose well. They're fine for limited light use; but are kinda a pain in the butt, not as strong or easy to use as SSQA Forks. I would 100% tell you to get real forks for moving 1000+ lbs.
The grapple; size it/style it for your intended use; lots of types that are better for say debris vs raking vs logs; and heavier/wider could be a disadvantage for one use vs an advantage for others.
If you are serious about the Kioti; I think its the 2610/2620 SE that comes default with dual rear remotes; cruise control; and a couple other features that my base model doesn't have.
Cab or no Cab; I prefer an open station; but I'm not north of the artic circle. Cab can be Great, but it does limit where you can fit; AC draws additional (already limited) HP from a PTO implement. A pretty fair compromise can be a ROPs open station, with a sun/rain PVC or diamond plate cover; that can be removed if needed; with a 12v DC fan mounted blowing on you (it's hot here in FLa; and we hide inside when it drops below 50 degrees).
I'll add; a tractor with loader is longer then you realize sometimes; and keep the loader/bucket swing in front of tires in mind while placing stairs/fences/terraces/ect as well as an transporting and storage solutions.