Heard that the Buff plates were hard to install, so we're not out of the woods yet...I think it will be good to not buy the plates separately. Having serviced this movement multiple times now, I can say that the parts are finicky, so buying a movement that has been adjusted by the person who is sitting with the plates is a much better option given that there are not really spare parts floating around very easily.
Also, not really sure how this is going to be regulated. Knowing how these modders can sometimes take shortcuts I hope its adjustable and easily regulate-able.