I renewed mine last year after a 14 year break. I did 1.6 hours preparation for a .8 hour checkride. I got all private maneuvers. I studied a lot and was ready for all manuevers. Check the CFI practical test standards for a reinstatement. I went with a $400 DPE, you can also go to the FSDO and do it for free. You get all the ratings back, but it is up to the examiner what you demonstrate.