Yes Tong is very good. If you cannot get her then the following are highly recommended

Ratt www.ratservice.com E-Mail at bkk@yahoo.com or bkk@hotmail.com
Note that Ratt while not a licensed guide is very knowledgable

Julie Taxi Home Page

For the places you want to visit it will be a long day (12 hrs +) and cost around 4000-5000 baht with the cost of gas now. But well worth it.