Ho Chi Minh, Chu Chi Tunnels, Mekong Delta, Angkor Wat-all?

I have about 4.5 days to be around Ho Chi Minh and I%26#39;m trying to figure out the logistics/possibilties of going to the tunnels, doing a boat cruise/overnight stay in the Mekong Delta AND going to Angkor Wat. Is it possible to go to Angkor Wat from HCMC stopping at the Chu Chi tunnels along the way? (Tours don%26#39;t seem to go that way.) Or are the tunnels a day trip, come back to HCMC then go to the Mekong Delta on the way to Angkor Wat? I prefer not to go to PP. Or should I just try and go the boat cruise/tour of Mekong AND tunnels and scratch Angkor Wat cause it be rtoo rushed? (Angkor Wat is lowest priority compared to other 2.) Do roads/boat/travel make doing these things possible? Or, upon getting to HCMC would a tour guide arrange this for me?

Ho Chi Minh, Chu Chi Tunnels, Mekong Delta, Angkor Wat-all?

You really don%26#39;t have time for Angkor Wat as well, in 4 1/2 days.

Cu Chi tunnels are to the north of HCMC, while the Meking Delta is to the south east, probably why the tours don%26#39;t go that way. Cu Chi tunnels would indeed be a day trip, possibly a half day trip if you had a private car and guide, and back into HCMC.

If you did continue on up the Mekong to Siem Reap and Angkor Wat, you would be rushing about and not really have time to properly see anything. You also wouldn%26#39;t have time to get back to HCMC and would probably need to fly out of PP unless you wanted to go home in a very roundabout way (Air Asia, for instance, flies out of Siem Reap, but only to Malaysia). If you were to return to HCMC from Angkor Wat, you would need the much more expensive multi-entry visa, which for such a flying visit would be hard to justify, IMO.