I asked on my instagram if anyone would be interested in seeing a full itinerary from South East Asia with prices, hotels and activities and pretty much everyone that answered the poll said they would like to so here it is.
I have uploaded photos of the itinerary into this blog post, but I have also included a link to a PDF file at the bottom of the post which might make it easier for you to navigate around the document (also, the format of the photos is annoying me so much so the PDF will look a bit nicer).
I hope this is helpful, there are a few activities that I cannot remember the price of or a company name but as long as you make sure to do your research before you book anything, you should be able to find these trips for a decent price.
I hope this is somewhat helpful and will give anyone thinking of planning a trip to these countries an idea of the costs.
PDF Link: South East Asia Itinerary