I believe you need the ECU tune to match the TCU tune for redline management but others may know more.

Others have run these to 17,265 (65/181mm = stacked) and 6,200RPM - so your 16,790 is far from unknown territory. However.....it would all depend on how often you plan to drive it that hard. If you want to autocross - then maybe more advice from long term experienced pioneers would be recommended.

I do know SC efficiencies are already dropping above the 13,000rpm (Stock) so you will be continually testing the limits of IAT's and additional cooling is preferred to control timing issues. But you've probably already got that covered.

Also note - when you refer to 16,790rpm - keep in mind that that is the directly driven uncoated 5 lobe rotor inside the SC. There is actually a gear box in the front face that transfers the drive to the meshed 3 lobe rotor (right hand side looking from the cockpit) - that gearing would convert your 16,790 to 27,983rpm on the 3 lobe teflon coated rotor.