Hello, I'm leaving for Galapagos tomorrow, trying to come up with a good itinerary. Any help appreciated. How much in advance do I need to book these daytrips? Recommended agencies? Many thanks!

Day 1: arrive San Cristobal, see the town, book day trips

Day 2: El Junco, Galapaguera, Puerto Chino - with day trip or bus

Day 3: 360 tour or Kicker rock tour (which is better?)

Day 4: Playas Loberia, Mann, Tijeritas

Day 5: Flight to Isla Isabela, see the town, Playa Isabela

Day 6: Morning tour Los Tuneles, Afternoon tour to Tintoreras

Day 7: Concha de Perla, afternoon boat to Santa Cruz

Day 8: Tortoise Ranch(es), Laguna Tortuga

Day 9: North Seymour day trip

Day 10: Bartolome day trip

Day 11: Flight back