I don't usually do Character pages but there are seven guys in this book. I was able to find people that were the exact image I had in my head and I don't think my descriptions could do them all justice, so here we go.
Hadley
Age: 18 years old
Ryder
Age: 22 years old
Kent
Age: 22 years old
Zeke
Age: 22 years old
Isaac
Age: 21 years old
Caspian
Age: 21 years old
Peter
Age: 20 years old
Finn
Age: 19 years old