Embrace your inner bear. Don't even think of trimming. If possible, you should also get testosterone shots and gain 20 pounds.
You're fine, dude, but could you at least wax the back?
Maybe a light trim so that you don't collect litter and dust, but keep it looking natural.
I like the well-groomed look. A little controlled man-scaping would be ideal.
Break out the clippers and the razor, buddy. I like my chest hair in a strict "T" formation. Belly fur should never extend more than 1/2 inch from the center line.
I have a thing for smooth guys. Anything other than a total body waxing and you're dead to me.