If you reside in a historic district, to conduct work to the exterior of your historic property, you are required to obtain a Certificate of Appropriateness (COA). A COA is a special permit obtained in addition to the regular building permitting process.
The recommended arrival time at the airport is 75 minutes prior to departure when traveling within the United States. You must be checked in at least 30 minutes before your scheduled departure time.
Ideally, you should be at the airport 2 hours in advance which is at 10.00am in your case. Travelling on a good traffic day, the journey from your hotel to the KLIA would most probably take an hour.