Regarding the trip starting date, as you arrive 4th-Octover at 10:30 am, then we can organize permits on the same day and start the trip on 5th-October. For this, you must send us all of your passport copies and passport-size pictures before you depart from home and must send a copy of your Nepal Visa on arrival at Kathmandu airport. I will process the permit paperwork before getting into the hotel. Then, the permits will be ready on the same day of your arrival and to start the trek on the following day.