Mine is 30" x 18" x 36". So they're the same height (before you cut yours down, of course.)
And he adores his hammock! Sleeps in it every night. I don't know if you can see, but he even dragged his blanket into it (it used to be on the bottom of the top floor so he wouldn't have to walk on the wire.) I've had it for six months, and it has never needing cleaning, aside from dumping out the food he puts in it.
And as for the fighting, before my previous male died, he would fight with Brutus all the time, especially after switching cages. As long as no blood is drawn, they're fine. Just little dominance fights males have from time to time.