Probably the safest option to be a full solar build around resto and radiant, though not necessary. If you’ve got the final shape and have a good exotic class item I’d run an inmost star eater bond with either nova or song of flame. As long as you are killing a lot you should be perfectly okay for any encounter in there. If you’re not fully confident or want to play it safe you can just do well and plop it down right at the crystal. Be wary of the ogre getting close you are close to an edge so there’s a chance he may just stomp you off if you’re unlucky. You can attack him from anywhere in the arena though. Sunshot would be a good primary as it’ll usually kill off all the trash in a couple of shots and lots of explosions. Can even use a graviton. If you’re resorting to using your heavy as your exotic things like thunderlord, G-horn, leviathans breath, grand overture, and queensbreaker with catalyst and particle reconstruction are good options.