I need help in trying to set an itinerary to Vietnam in the month of July. 17 days. What do you suggest? we would like to visit Hanoi, Sapa,Halong Bay, Hue, Da Nang, Hoi An, Ho Chi Minh City, Mekong Delta, Phnom Penh and Siem Reap. Any recommendation on itinerary or can someone recommend travel services that can help with an itinerary?thanks very much.