If it was mine I’d be doing the DSG tune, full exhaust (or at least mod it to get pops/farts) and stage 2 ECU tune plus rear sway bar as a minimum.
I’m terms of launch RPM 4,500 is pretty high. I’d be inclined to run it closer to stock launch rpm just to be nicer. Unless you’re planning on running it down the 1/4 mile and chasing times it’ll just put more stress on everything for maybe 0.1s. To me it’s not worth it.
I’d be doing an IS38 swap before raising launch rpms to somewhere things can break. You’ll get a better time and it’s mechanically more sympathetic to your driveline. That’s if chasing times is important.
With a stage 2 IS38 swap you’ll be running mid 4 seconds easily.