The Heat and Bulls are unreachable, Magic is pretty much a lock for #3 in my opinion. Then you have 76ers and Hawks in the mix, with Boston looking in. IF, a big IF, everything goes super well, and everything goes choppy for other teams, Knicks will have a remote chance to look at home court for the No. 4 seed. But I don't think it's likely.
More realistically, Knicks should work their a$$ off to get to the 6 or even 5 spot, to avoid Heat and Bulls, maybe they will have an outsider chance.