I made a pretty similar change last summer, but to an mk1.5. Aeris from a 2012 Soul.
The Soul had a 70mm stem, 100mm dropper, 120mm Rebas and 760mm bars. The Aeris is 35mm stem, 170mm dropper, 150mm Pikes and 760mm bars. Minion / HR2 on both.
I put the ‘**** me this is amazing’ difference down the long, low and slack geo combined with the front end being much stiffer. It goes and sticks to where you point it. And of course, the back end just eats it all up. None of this ‘the front writes cheques the back can’t cash’ rubbish.
You’re going to have soooo much fun – sure you don’t want a 145?