starting my 2015 vvt hemi journey

Pending how big you go with Cam, a vvt limiter or lock will be required. At that rate, I would probably just lock it.

And friendly fyi, the stock TB Is good for gobs of HP.
I have personally ran mpfi engines with 800+hp with 84mm tb's and went all the way up to 110 mm with ZERO change on the dyno.

Everyone thinks about tb size like they do a carburetor. On mpfi, it's just a flapper valve. Fuel is injectors and ecu.

Hope that helps!