Yes it will seem louder because it stays at peak torque under hard throttle.
Yes they constantly switch from ev- hybrid- engine depending on demand
No, see https://www.mavericktruckclub.com/forum/threads/hybrid-speed-vs-fuel-economy.43473/
If you NEED AWD, 4k towing or want to mod for power - eco
As far as power, it seems some people think the Hybrid power drops off as speed increases (perception of transmission sound) but testing shows the opposite. Here's 2 shots of a test fwd eco vs fwd hybrid, note the hybrid gains in the top...
I recommend this video for hybrid owners interested in batter management & power in the different modes The first half is just general more info of battery state of charge in 2nd half.
The turbo will be about 1.5 sec faster 0-60 and hold the same 1.5 sec lead in the quarter mile, both loaded and unloaded according to the major automotive press tests.
Just a heads up if you are planing on adding tow hooks I saw a video showing the inner structure to actually mount the hooks is not present if it was not equipped... do your own research.
No you don't need to polish if you are happy with the finish now. Polishing will ensure there are no dealer installed sealants but you can also use Meguiar's Wash plus (have to inport) or Kamikaze KMKZ Cleansing. Pearl for the level, Creature for the buff. You will be removing the carrier...