[drawing]

Hi,
I am planning a 5D trip to HCM, maybe like this:

Day 1 - City Tour
Day 2 - Cao Dai and Cu Chi
Day 3 - Mekong Delta, leave for Mui Ne
Day 4 - Mui Ne
Day 5 - rest, home

I am wondering if I should spend a night at Mui Ne, or do a 2D Mekong Delta tour. and whether I book the tours before I go? or is it fine to book tours locally.
Any advice?