Elementalists?

Hm, starting to debate whether or not I should switch max Pluto with max Florae. They're both at 10 right now and I guess I'm still experimenting around, but at least at the start, I didn't use Florae as much as I used Pluto, preferring Pluto because it's ranged, while Florae is close-up. I was being told against using Pluto because Florae's "one of the most important skills" but that's honestly all I've been told.

Can't max em both in my build, so... are there any pros and cons to using one over the other? Which would you recommend, personally?

I'm also debating on Ice Walls vs Sun Burst. :I

EDIT: Current pre-awakening build here, time to see which ones suit me better.