hopefully it will work for you. too much volume and not enough rest for me. it looks like a good layout if you can pull it off. i'd start with the DL on back day, and flat BB bench on chest day, just as you start w/ squats on leg day.
Looks ok. You're 18 with some size on you so you can probably handle the volume, but it is a little high in terms of total number of exercises, sets and reps. You may want to progressively change up your rep range and go a little heavier/lower reps on your primary lifts. I have always preferred to deadlift at the end of my back session so that my CNS is fully warmed up, but do what works for you. Also, I would not personally want to train triceps (especially with close grip bench) two days before chest. My tris would still be fried. My workaround would be to do legs on Wed, Chest on Thurs, arms on Fri. It's a compromise, though, because you would only have one day in between deads and squats. Whatever works for you.
What you don't mention is intensity and diet. Specifically, how much rest between sets and what you're eating to support your goal. Keep your diet clean, and eat at least 1g of protein per lb of bodyweight per day.
I would do something that emphasizes the big lifts more with less isolation work. Really pour your efforts into getting stronger on the main lifts like SQ, DL, BP, overhead press, and rows. If size is your main goal get stronger in the 6-12 rep range on these lifts then add a limited number of isolation exercises to "finish" things off. Combine that with lots of food and you will gain size.
If you want something that puts it all together, I would recommend something like 5/3/1 since it will give you a framework and progression but still allow you customize your assistance work a bit.