My thoughts are he's going to likely be on the smaller side considering he's already 3.5+ yo on age. Probably will not be the widest rack or longest tined rack ever. I would give him one more year to see where he's at.
It's funny I've been watching a 7pt in mason since he was 2.5.
He been a regular feeder buck his whole life. Unfortunately I only paid attention to him or really noticed him as a 2.5 year old. He was a short tined(except brow times they were above average) but probably 13-14". At 3.5 he got a little wider may be 15-16" put still short tined and above average brows, not much mass. Now at 4.5 he is over 20" wide and times have grown some. He put on a ton of inches this year. Hoping he doesn't begin to stray much. Really like to take him to 6.5 just to see what he does.
You really never know.
Here he is last year. @3.5
Op's deer is just busted up. He ain't hurring any thing