I asked a lot of questions & luckily got all answers.
Finally here is my itinerary:
Flight to Chiang Mai.(2hrs)
We will be staying in Guesthouse Liam's Suan Dok Mai from 18 Dec till 22 Dec.
23 Dec - 30 Dec:
Take flight or night train to BANGKOK and we will be staying at Arcadia Suites Bangkok.
30 Dec - 6 Jan:
Fly to KOH SAMUI to stay at Chalala Samui Resort & doing some islands around.
6 Jan - 9 Jan:
KRABI where we will stay in Vipa Tropical Resort.
9 Jan 2015
Fly to Kuala Lumpur from Krabi & back home.
As per my calculations: We might spend more or less THB 4000 per day for two depending on days;excluding flights & bed.
We will do bungee jumping,flyboard and parties which will cost more I think.
What are your views?
Thanking you in advance :)