Inquiry Submission By Connor S

I am backing through the several countries in SE Asia this fall/winter and I plan to cross from Ho Chi Minh city, Vietnam to Phnom Penh, Cambodia in early January. From here I have the option to go through Siem Reap and north to Thailand or cross into Laos to check out The 4000 Islands and go north through Laos for 30 days and then cross into Thailand someplace up north. I want to see both eventually but I only have about 30 days to explore each country and I want to avoid back tracking.

Open to adjustments and suggestions.