The first day I would build
Give the city one clear route before adding extras.
- Start with Royal Palace and Silver Pagoda while energy is high.
- Use Central Market as the natural reset instead of crossing town too early.
the easier plan is Royal Palace and riverside first, Central Market nearby, Tuol Sleng as a separate respectful block. That keeps the day readable instead of turning every good name into a separate detour.
I would rather leave one place for tomorrow than drag a tired route through Wat Phnom just because it looked close on a map.