Looks awesome to me. Now just drop the UTH down to around 86-88F and you should be golden. You generally want to see the boa going from cool to warm sides. If they are on the warm side all the time, then bump the warm side up a couple degrees. If its on the cool side all the time, drop the warm side down a couple degrees. You want the boa to move around the whole cage, not sit balled up on the cool side or warm side.