Hi there... Going to switch from a Motobecane Messenger I've been upgrading throughout the years (but that has always been a tad bit too small for me) to a Soma Rush that I actually managed to try out. Going to move all the components, but I want a threaded fork and I was looking here for ordering... Not 100% sure what size thou'...

The Rush headtube length is 130 (for a 55). I would add a Chris King 2Nut and a Nitto Pearl. Looks like the 170mm would be perfect, but I know that if it's too short I'll be ****ed. Should I go with the 200mm and add spacers if necessary?

Thanks in advance.