Welcome to the forum; hope you find the right Rocket for you and buy it.
The Rocket
IS a very hot bike - every time to go back to mine and there's a crowd standing round, someone will say "that's a hot bike" - so it must be true!

If you're talking temperature, well it's a big lump of metal containing 2300cc of explosions and a gallon or so of near boiling water, so yes, there's heat.
Windscreen? You'll get buffetting no matter which one you choose. Better off without one I reckon (except if there's lots of flying insects around). Zero turbulance on a bike? Not while it's moving.