Based upon these pictures(and I bet they don't fully represent the steer):
To me he looks a little short necked, straight in the front shoulder and leg, and toes out a bit in the pic. May be a bit straight on rear leg set.
I bet he looks good from the profile when set up. I would think the combo may cause him to track a bit short on the move.
I like his natural versus fed-on thickness. He has a bunch of muscle and looks to have a very nice top. He looks like a grower!
Personally, I prefer cattle that have some muscle definition rather than those that are shaped well but have little definition.
I attribute some of that to fat deposition rather than actual product.
I don't know your calf weight, target weight or when your final show is, so it is hard to make any suggestions regarding feeding.
I'm also not a professional, so my advice may be moot. If you are looking for more guts, good quality grass hay, oats, rolled corn, molasses, protein and oil work for me.
I have a very similar steer. He is gaining very well and will stand toward the top in the show ring.
I already have him sold when done showing. That is just fine by me.