Sorry for the late reply! I would definitely recommend it personally, it was really beneficial and I feel was the best representation of the actual UKCAT exam this year. I would start doing mocks by spacing them out throughout your last nine days.
But the question appear easier than the medify ones. Would that be challenging enough? because i dont want any nasty surprises. Also are the medify questions harder than actual or representative?
Where can we find the average scores and cut offs?
average scores would be on the ukcat website im guessing and cut offs will be published by the uni's if they choose to, just keep checking on medicine threads on here and I'm sure nearer the time people on here will post them. idk that much as this is my first year applying so you are better asking someone more experienced on this - sorry i couldn't help much