Picking a Tempo?

I often wonder about this.
I have a 4 chord progression, pretty upbeat but not super fast.
At 148 it takes 4 bars.
While at 90ish it takes 2 bars.

Do you just go with one chord to a bar?
90 feels too slow but 148 feels too rushed!
This is probably something my brain should just get!

It should be the same number of bars whatever the tempo, be it 250 bpm or 0.25 bmp.

The song decides, not me!