Scrambler Street Scrambler 900 (2021) Questions...

Hi all,
I've managed to put my greasy hands (and emptying my wallet) on a Street Scrambler 900 2021, the one with those few more ponies.

Now my questions are:

1-Better decat and stock cans or aftermarket cans and cat in?

2-You all still got SAI in or took it off as you do with the older models?
Note: is Euro 5.

3-If I run it with DNA filter, no air snorkel, cat in and aftermarket cans, will I need remapping or the 12 minutes adaptation would be enough?

Thanks in advance guys