And the most amazing thing is that he consumes mostly carbs, vegs, and fruits with only one portion of meat daily.

Zeist you need to chill on the cardio man. Slow and steady wins the race. You don't want to end up injured and unable to do cardio for the next few months. Btw, congratulations on your achievement so far

When I first started doing back also no feel on the back... But after a few months the muscle develops, your form improves and you can actually feel there is muscle there. And with muscles there, you will feel sore the next day after a back workout.

That's what I believe anyway, no evidence to back it up though, just personal experience.

Dats damn good progress bro, good job and keep it up! Work harder on chest and back. My chest is worst than yours though, ahahahah!