In Picasa you can check the full EXIF for each shot and see what ISO was used, those 4 shots above were shot at 1600, 400, 400 and 3200 ISO. Most of the time I had the camera at 200 auto ISO.
I just bought the cheapest possible return ticket to Ben Gurion airport and had a room reservation at the Austrian Hospice for 5 days. I only walked the Old City and visited Betlehem shortly. After that I took a bus to Eilat and taxi to Jordan and Petra, Jerusalem-Petra takes 7 hours. 2 days in Petra, 2 days in Wadi Rum, then taxi to Eilat and morning bus to Jerusalem. One night at the Lutheran Hospice, which was nicer and cheaper (60€ for single) than the famous Austrian one. I had everything packed into a 24 liter Osprey daypack (no chek-in luggage), even an Osprey messenger bag which I used as a camera/guidebook bag while walking the town. Total weight 7 kg.