Romania itinerary

Hello! I’m planning a road trip to Romania in late September/early October next year. There are lots of places I’d like to visit and our itinerary is very packed. I’d appreciate any opinions on whether this is doable or if I’m being over ambitious. Thank you! ——- Day 1: Land in Bucharest, pick up car and drive to 1st accommodation in Busteni/Predeal (1-2 nights depending on flight) Not more than 2 hrs by car Day 2: Explore Castle Peles, Brasov centre and Tampa. Day 3: Leave for Transfaragasan, we can stop at Bran castle, spend 1 night in a hotel halfway up the Transfagarasan road. Day 4: Leave for Sibiu, explore the town, travel to our accommodation in Turda (or the vicinity) and spend 1 night. Not more than 2 hrs by car (If we are feeling up to it we can explore Cluj) Day 5: Visit Turda Salt mine, Cluj-Napoca, travel to our accommodation close to Sigishoara and spend 1 night (If we are feeling up to it we can explore Sigishoara) Day 6: Explore Sigishoara, drive down to Bucharest - 4 hour drive. Stop halfway for lunch. Arrive In Bucharest, check in, return the car (or vice versa depending on convenience), spend 1-2 nights in Bucharest depending on the flight. Day 7: Bucharest exploring, go home :'( ——-