How deep are your pockets because the variables at play are if you are going to 3-5 GoGo's every night and how much fucking you plan to do, buying drinks etc you want about 12k baht per day but I have 7k baht a day and it sets me well.
Scams use tuktuks with caution if you get one say no tailor because they will fuck you about I find once you know the area you instinctively know when someone is ripping you off it comes with time
You should just book the ticket get a hotel near nana get on the plane and get there don't worry about anything