I would opt for the 2LT, when i was 16 I bought a 97 WS6 with 305hp, while i never got my self hurt in it, i did however get plenty of tickets. My father split the cost with me after a lifetime of saving on my part.
Only you know your son, 426 hp is a lot for a kid that age, but I cant judge that for you.
PS: not sure were rochester is but i grew up in West Lafayette, and the police there knew me by name lol.
2010 RS/SS - C.A.I Intake, Muffler Delete, Skip Shift, VMAX TB