Can I put a camper in the back and tow a 17 foot speed boat?
Are the back seats comfortable for small kids (ages 6 and 4)?
I am looking for a family vehicle for the next 2 or 3 years. My kids are 6 and 4. I am looking at 2002 Tundra Limited 4X4 Access Cab V8 Automatics. The boat is a 16 foot Glastron with a 70hp 2stroke. The camper is a fiberglass 9 ft long Bigfoot.

Not enough info to answer specifically. You'll have to calculate yourself. V6 or V8? automatic or standard? LTD or SR5? How much does the camper weigh? What's the tongue on the boat weigh?

Here's the payload specs.

http://www.new-cars.com/2002/toyota/toyota-tundra-specifications.html

As for kids, yes. Only problem back there is no legroom. Small kids would be fine as long as you can buckle them in properly (some states require car seats or boosters until child reaches a certain height, so you'd have to investigate this yourself too).