Your help is needed. I have read mixed reviews regarding Kai, please tell me what you think of this...
day 1- visit long neck tribe, suthep mountain,What Phra That Doi Suthep, Handicraft village of Bor Sang and Sankamphaneg.
Day 2-head south to elephant camp ride for 1 hour in forest, take raft along river. drive to Doi Inthanon lunch at waterfall, visit Hmong tribal market, buy snacks hike to village (no tourists), hike along trail at end of trail another Karen village 2hour hike in total.
Day 3- head to Chaing Rai, see hot spring before Mai Sae border market of Thai and Mynamar, move on to Golden triangle take a long boat ride along river and visit Laos village in middle of river, after visit Akha tribal village. all this for 4450 baht.p.p. includes admissions.

Those are three very full days, but if you're energetic, go for it. We've used Sergeant Kai twice and been pleased both times.

is it possible to do all of day 2 in one day??

Im told we will be picked up at 8am and return around 7:30 pm. (day 2)
So these tours sound ok then? We are in Chiang mai for 5 days is there anything else that is a must do?

I know people who used Sergeant Kai to do your itineraries for days 1 and 2. They did do everything listed in day 2 and had a great time. They were generally pleased with his services.

We did something very similar to your day 2 with Sgt Kai (actually, on that day we had another of his guides, but we had him when we went to the Elephant Conservation Center the next day). Both days were great. I'd highly recommend him. My trip report's lengthy, but you can scroll down the part on Chiang Mai if you'd like to read a detailed journal of those two days. Here's the link:

http://www.fodors.com/forums/threadselect.jsp?fid=27

The days sound packed. How many people are you...just curious, as I had seen another person post about his pricing and it was much higher than what you have been quoted if I remember correctly.

It's 3 hours drive to the Golden Triangle from Chaing Mai according to the Anantara...meaning 6 hours of Day 3 will be in the car driving. The tour on this day is the typical Golden Triangle tour that I have read reports of as being disappointing and tacky. I would skip Day 3, or replace it with a less tourist trap kind of day.

Just one thing about him, too...I've seen quite a few reports where he was supposed to be the guide himself, but sent someone else instead.

We used Kai in Feb and had a wonderful time with him. We did what you've described in day 1. He really kept us entertained all day with his stories. I would definitely recommend his services.

There will be 5 of us and Kai said we will be in a van