Adjustable stem is gonna bring bars higher more than closer. Adj stems are usually 100mm or so, kinda long for what you want. I guess if you put it under all those spacers it might approximate what some shorter stems would do.

Do you wish the bars were higher also?

I'd get the 135° 75mm Profile Boa.

Get on the bike and lean against the wall. Grab a pretend handlebar right in front of the head tube and a little higher than current bar. That's where your bar will be with this one. Might be too extreme a change, dunno, hopefully you do.