Wicked Twister CATIA Model

I actually started working on this model over a month ago but I just now got time to actually make some progress on it. I am recreating Wicked Twister at Cedar Point in CATIA V5 R19. I got the initial data points from No Limits simulator program. I am still looking for a solution to help reduce file sizes. This model has many splines and ribs which tend to weight it down. Here is what I have thus far: