Weekend is really looking nice. ECMWF show much less in the way of low clouds and full afternoon sun both days with highs in the mid 70s and light wind. Ideal and good timing.
As someone who has lived in and explored both places quite a bit, there are differently beautiful sides to both.
The greenness and lush forests surrounding the Cascades definitely add a colorful vibrancy lacking for much of the Rockies. And the sheer size of volcanic peaks rising from near sea level to 10k+ is undoubtedly more visually impressive from distance.
That said, you are correct that epic vistas are much easier to come by in the Rockies. The size of the range is also so much broader in many areas, creating many a valley view with peaks surrounding you.
I love both.