All of them will work. IMO your are overspined and overweighted for my ideal setup for elk. I have had more range estimation errors on elk than any other animal. This is due primarily to my preferred method of hunting which is calling, and results in more ranging of objects where I expect the elk to come in and not the animal itself. Those arrows will leave little room for error on shots past 30 yards. Again all in your expected situation. Of the ones you mentioned I would go the Rampage. If I was going to tweak I would probably try a 350 rampage, with a similar front weight.
Just for comparison sake and looking at spine... My current rig is 28 in draw, a more aggressive cam, and 80 limbs. With a 70 grain brass upfront I finish out at 490 I will possibly be looking at a heavier options to play with, but for your shorter arrow and less poundage, you should be safe with a softer spine.