Everything I have ever heard about Japanese encephalitis vaccine is that it is not particularly effective; nor is the disease particularly prevalent. I've never been vaccinated for that, and have been to most of SE Asia without incident. Neither have I ever been vaccinated for rabies; I am fairly confident of my ability to avoid being bitten by a rabid animal (not that I have ever come across one). I have had the typhoid vaccine.

Hepatitis A and B, MMR, tetanus, and yellow fever vaccines seem quite important, as is malaria prophylaxis and trying very hard to stop mosquitoes from biting you. The rest is likely to be overkill, IMO.