In my fastest CV games, I'm often forced to divert away from Rationalism to get the powerful Ideologies and Aesthetics finished. A lot of that depends on whether I have much early tourism. If I don't, finishing Aesthetics isn't as much of a rush as its power really kicks in once you're generating real tourism. Because this game is going to have pretty late theming due to the delayed Museums, there'll be some interesting decisions to be made. I'd be taking that next policy in Aesthetics next just to get the culture buildings going. After that, a reasonable case could be made for each of the three culture paths.