Got a quick question.

I'm in the process of adjusting my fit, and lowered my stem 15mm today. There's now a pretty high stack of spacers on top of the stem as you can see. Is it safe to do some rides with this amount of spacers, to perfect my fit?
The expander plug sits perfectly inside the steerer tube (aligned on the inside of the stem), and everything is tight as should be. No play in the headset or anything.

The steerer will be cut, but since I'm in the process of changing handlebars and going from 100 to 120mm stem, I would prefer waiting to cut the steerer tube until the fit is perfect.

Thanks!