Thailand here we come

We have been busily planning our holiday to Thailand this last couple of weeks. We live on Sept 12. Our itinerary is as follows

Arrive Kuala Lumpur - Zoo & Bird/Deer park etc (2 days)
Train to Butterworth and Ferry to Penang - George town (3 days)
Train to Bangkok - floating markets kings palace etc (2 days)
Chaing Mai - including 2 day trek and elephant experience (5 days total)
Chaing Rai - Akha village Ikoh San Yuek, Hilltribe Developments and Welfare Center in Amphoe Mae Chan and Mai Sai (Myanmar border) (4 days?)
Golden triangle - Chiang Khong cross Laos border to Huay Xai - 2 day slow boat journey to Luang Prabang
Luang Prabang - Pak-Ou Caves and waterfalls, Temples, weavers, revolutionary museum etc
(2 days)
Travel to Vientianne - sightseeing 2 days
Train from Nong Khai to Bangkok - for some shopping before heading home.

We are away for 4 weeks in total. I was hoping to do some Wwoofing but our time is short and David is not keen to work during his holiday - which is completely understandable.

It is quite daunting looking at all the places we are craming into our 4 weeks, but there will be a few quiet days along the way - like the 2 day boat trip in Laos.

Cant wait to start packing!