Hi guys! I (21M + US Citizen) am just graduating college and planning a solo trip to SEA. Wanted to get advice on a multitude of things below, appreciate it.

Itinerary

My planned itinerary is the following starting at the beginning of June:

• 1 week in Chiang Mai + 1 week in Bangkok
• 1 week in Vietnam (haven't decided between North/South/Central, but I'm leaning towards Da Nang due to people's advice about the weather being quite brutal in the South at the time.)
• 1 week in Cambodia (I want to see Angkor Wat in Siem Reap, so 3-4 days there, and then take a bus to Phnom Penh just to see the city and museums)
• 1 week in Malaysia (Kuala Lumpur + Singapore)
• 10 days in China using the TWOV (Probably Beijing to see the Great Wall, though I know this will definitely be the hardest part of the trip. Consulted with some friends and will need to get familiar with Trip.com/WeChat/AliPay/DiDi, etc.)
• End in Taipei for a week and fly back to the US.

I've marked down certain places I want to see in each country but otherwise don't really have a solid plan, trying to just wing it and get out of my comfort zone.

Questions: I felt like a week was enough to see each place, especially since I only plan to stay in 1 or 2 cities per country. However, wanted to get people's opinions on if I was overcrowding/overestimating the time it would take to be traveling between each place?

Also in terms of planning, I was planning to book flights/hotels in the next country a few days before so I can take my time in certain places. The only caveat being I need a return flight out of China before I fly in, if anyone has visited China for the first time would love to hear yall's experience.

Packing

I have an Osprey Farpoint 40L backpack which I'm planning to fit everything in. Though I am wondering if I would need a lighter/waterproof daypack to carry around the city while exploring?

In terms of clothes:

• 2 long pants
• 2 long-sleeved shirts
• 4 shirts + 2 cargo shorts
• Rain jacket
• Slides + Walking shoes

I'm planning to just bring basic toiletries like toothbrush/paste and buying sunscreen, mosquito repellant, and moisturizer over there? I know Thailand will have a ton of these so I'm not too worried. Been to Peru and got laundry done pretty easily so I'm assuming it'll be similar in that regard, and if I need more clothes I can buy cheap ones on the spot.

Questions: Would ya'll recommend packing medication like Ibuprofen/Imodium or buying it there as well? And also how do you carry around your passport everywhere, I was thinking of buying a holder to put in a day pack because leaving it in the hostel/hotel doesn't feel great...

Misc

• Travel Insurance: Found this great post here, I was looking at WorldNomad/Allianz but it's quite expensive. Going to check with my current provider (Cigna) first, but if anyone has any suggestions I would appreciate it! I definitely wanted to be covered for illness, falling off a Grab, etc