Looks great! I was also thinking to slow it down, in reality you go up quite slowly compared to the descent, and it will reduce the chain wobble. But indeed, the question is, will you reach the beginning of the chain again?
In any case I'm dreading the release of a Creator Expert roller coaster. I obviously DO want one, but my city's fairground is full! I even didn't start on my MOC bumper cars because there's nowhere to put'em! (backup plan engaged! who needs road plates anyway!)