Replying to Boots - Point me in ballpark direction

Been on the Dalbello Krypton Rampages since like 2007. I have the White/Brown pair. All my skis since then have been, Volkl Walls, Rossi Scratch, 2 Pairs of Volkl Da'Nollies. I'm looking at getting the Line Blends from last year while also keeping my latest pair of Da'Nollies. I am a pretty aggressive skier, nothing crazy in the park - toning it down just some 3's, 5's and rarely do rails anymore (im 28 and have a lot of responsibility at work ha)

I'm looking at the Dalbello Il Moro MX which has a flex 90 (can get proform)
Also looking at some FullTilts since everyone and their brother has them, they must be good. I'm not sure how the flex system works and if I need the First Chairs or should I get the Descendants? I see you can swap flex toongues? If so, I like the First Chair aesthetic more and what would be your rec on a tongue? I'm assuming a 6 or 7 is close to a flex 90 in Dalbello. Not sure I want anything over 110 tbh.
I hardly EVER ski powder btw.